diff --git a/.hgtags b/.hgtags
index c614db0d3e6ab5e840e5da4ec22102591b78b4be..066f705b9e3058ed4ca47eb4533313e0c3cc5cfa 100755
--- a/.hgtags
+++ b/.hgtags
@@ -458,7 +458,6 @@ a314f1c94374ab1f6633dd2983f7090a68663eb2 3.5.2-beta4
 9b1b6f33aa5394b27bb652b31b5cb81ef6060370 3.5.2-release
 a277b841729f2a62ba1e34acacc964bc13c1ad6f 3.5.3-release
 fb1630153bac5552046ea914af3f14deabc1def8 3.6.0-materials-beta1
-69429d81ae4dd321eda2607901ef0a0fde71b54c 3.6.0-release
-69429d81ae4dd321eda2607901ef0a0fde71b54c 3.6.0-release
 0a56f33ad6aa112032b14a41dad759ad377bdde9 3.6.0-release
+83357f31d8dbf048a8bfdc323f363bf4d588aca1 CHOP-951-a
 75cf8e855ae1af6895a35da475314c2b5acf1850 3.6.1-release
diff --git a/indra/llvfs/lldir.h b/indra/llvfs/lldir.h
index cc10ed5bbd02501f5da65037a4a8f735ab16404f..e02bf552aadccfd7b38dc83f26346cf7a18f04bb 100755
--- a/indra/llvfs/lldir.h
+++ b/indra/llvfs/lldir.h
@@ -32,7 +32,7 @@
 #define MAX_PATH MAXPATHLEN
 #endif
 
-// these numbers *may* get serialized (really??), so we need to be explicit
+// these numbers are read from settings_files.xml, so we need to be explicit
 typedef enum ELLPath
 {
 	LL_PATH_NONE = 0,
diff --git a/indra/llxml/llcontrol.cpp b/indra/llxml/llcontrol.cpp
index 666c03e9fffc89295d0549544d0c3c18e9382104..6e11a5f6f3471f1d50461c0460e95b6db8caaa8c 100755
--- a/indra/llxml/llcontrol.cpp
+++ b/indra/llxml/llcontrol.cpp
@@ -136,10 +136,10 @@ LLControlVariable::LLControlVariable(const std::string& name, eControlType type,
 	: mName(name),
 	  mComment(comment),
 	  mType(type),
-	  mPersist(persist),
+	  mPersist(persist? PERSIST_YES : PERSIST_NO),
 	  mHideFromSettingsEditor(hidefromsettingseditor)
 {
-	if (mPersist && mComment.empty())
+	if (persist && mComment.empty())
 	{
 		llerrs << "Must supply a comment for control " << mName << llendl;
 	}
@@ -262,7 +262,12 @@ void LLControlVariable::setDefaultValue(const LLSD& value)
 
 void LLControlVariable::setPersist(bool state)
 {
-	mPersist = state;
+	mPersist = state? PERSIST_YES : PERSIST_NO;
+}
+
+void LLControlVariable::forcePersist()
+{
+	mPersist = PERSIST_ALWAYS;
 }
 
 void LLControlVariable::setHiddenFromSettingsEditor(bool hide)
@@ -292,10 +297,29 @@ void LLControlVariable::resetToDefault(bool fire_signal)
 	}
 }
 
-bool LLControlVariable::isSaveValueDefault()
-{ 
-    return (mValues.size() ==  1) 
-        || ((mValues.size() > 1) && llsd_compare(mValues[1], mValues[0]));
+bool LLControlVariable::shouldSave(bool nondefault_only)
+{
+	// This method is used to decide whether we should save a given
+	// variable. Two of the three values of mPersist are easy.
+	if (mPersist == PERSIST_NO)
+		return false;
+
+	if (mPersist == PERSIST_ALWAYS)
+		return true;
+
+	// PERSIST_YES
+	// If caller doesn't need us to filter, just save.
+	if (! nondefault_only)
+		return true;
+
+	// PERSIST_YES, but caller only wants us to save this variable if its
+	// value differs from default.
+	if (isDefault())                // never been altered
+		return false;
+
+	// We've set at least one other value: compare it to default. Save only if
+	// they differ.
+	return ! llsd_compare(getSaveValue(), getDefault());
 }
 
 LLSD LLControlVariable::getSaveValue() const
@@ -355,7 +379,7 @@ std::string LLControlGroup::typeEnumToString(eControlType typeenum)
 	return mTypeString[typeenum];
 }
 
-BOOL LLControlGroup::declareControl(const std::string& name, eControlType type, const LLSD initial_val, const std::string& comment, BOOL persist, BOOL hidefromsettingseditor)
+LLControlVariable* LLControlGroup::declareControl(const std::string& name, eControlType type, const LLSD initial_val, const std::string& comment, BOOL persist, BOOL hidefromsettingseditor)
 {
 	LLControlVariable* existing_control = getControl(name);
 	if (existing_control)
@@ -374,66 +398,66 @@ BOOL LLControlGroup::declareControl(const std::string& name, eControlType type,
 		{
 			llwarns << "Control named " << name << " already exists, ignoring new declaration." << llendl;
 		}
- 		return TRUE;
+ 		return existing_control;
 	}
 
 	// if not, create the control and add it to the name table
 	LLControlVariable* control = new LLControlVariable(name, type, initial_val, comment, persist, hidefromsettingseditor);
 	mNameTable[name] = control;	
-	return TRUE;
+	return control;
 }
 
-BOOL LLControlGroup::declareU32(const std::string& name, const U32 initial_val, const std::string& comment, BOOL persist)
+LLControlVariable* LLControlGroup::declareU32(const std::string& name, const U32 initial_val, const std::string& comment, BOOL persist)
 {
 	return declareControl(name, TYPE_U32, (LLSD::Integer) initial_val, comment, persist);
 }
 
-BOOL LLControlGroup::declareS32(const std::string& name, const S32 initial_val, const std::string& comment, BOOL persist)
+LLControlVariable* LLControlGroup::declareS32(const std::string& name, const S32 initial_val, const std::string& comment, BOOL persist)
 {
 	return declareControl(name, TYPE_S32, initial_val, comment, persist);
 }
 
-BOOL LLControlGroup::declareF32(const std::string& name, const F32 initial_val, const std::string& comment, BOOL persist)
+LLControlVariable* LLControlGroup::declareF32(const std::string& name, const F32 initial_val, const std::string& comment, BOOL persist)
 {
 	return declareControl(name, TYPE_F32, initial_val, comment, persist);
 }
 
-BOOL LLControlGroup::declareBOOL(const std::string& name, const BOOL initial_val, const std::string& comment, BOOL persist)
+LLControlVariable* LLControlGroup::declareBOOL(const std::string& name, const BOOL initial_val, const std::string& comment, BOOL persist)
 {
 	return declareControl(name, TYPE_BOOLEAN, initial_val, comment, persist);
 }
 
-BOOL LLControlGroup::declareString(const std::string& name, const std::string& initial_val, const std::string& comment, BOOL persist)
+LLControlVariable* LLControlGroup::declareString(const std::string& name, const std::string& initial_val, const std::string& comment, BOOL persist)
 {
 	return declareControl(name, TYPE_STRING, initial_val, comment, persist);
 }
 
-BOOL LLControlGroup::declareVec3(const std::string& name, const LLVector3 &initial_val, const std::string& comment, BOOL persist)
+LLControlVariable* LLControlGroup::declareVec3(const std::string& name, const LLVector3 &initial_val, const std::string& comment, BOOL persist)
 {
 	return declareControl(name, TYPE_VEC3, initial_val.getValue(), comment, persist);
 }
 
-BOOL LLControlGroup::declareVec3d(const std::string& name, const LLVector3d &initial_val, const std::string& comment, BOOL persist)
+LLControlVariable* LLControlGroup::declareVec3d(const std::string& name, const LLVector3d &initial_val, const std::string& comment, BOOL persist)
 {
 	return declareControl(name, TYPE_VEC3D, initial_val.getValue(), comment, persist);
 }
 
-BOOL LLControlGroup::declareRect(const std::string& name, const LLRect &initial_val, const std::string& comment, BOOL persist)
+LLControlVariable* LLControlGroup::declareRect(const std::string& name, const LLRect &initial_val, const std::string& comment, BOOL persist)
 {
 	return declareControl(name, TYPE_RECT, initial_val.getValue(), comment, persist);
 }
 
-BOOL LLControlGroup::declareColor4(const std::string& name, const LLColor4 &initial_val, const std::string& comment, BOOL persist )
+LLControlVariable* LLControlGroup::declareColor4(const std::string& name, const LLColor4 &initial_val, const std::string& comment, BOOL persist )
 {
 	return declareControl(name, TYPE_COL4, initial_val.getValue(), comment, persist);
 }
 
-BOOL LLControlGroup::declareColor3(const std::string& name, const LLColor3 &initial_val, const std::string& comment, BOOL persist )
+LLControlVariable* LLControlGroup::declareColor3(const std::string& name, const LLColor3 &initial_val, const std::string& comment, BOOL persist )
 {
 	return declareControl(name, TYPE_COL3, initial_val.getValue(), comment, persist);
 }
 
-BOOL LLControlGroup::declareLLSD(const std::string& name, const LLSD &initial_val, const std::string& comment, BOOL persist )
+LLControlVariable* LLControlGroup::declareLLSD(const std::string& name, const LLSD &initial_val, const std::string& comment, BOOL persist )
 {
 	return declareControl(name, TYPE_LLSD, initial_val, comment, persist);
 }
@@ -805,21 +829,12 @@ U32 LLControlGroup::saveToFile(const std::string& filename, BOOL nondefault_only
 		{
 			llwarns << "Tried to save invalid control: " << iter->first << llendl;
 		}
-
-		if( control && control->isPersisted() )
+		else if( control->shouldSave(nondefault_only) )
 		{
-			if (!(nondefault_only && (control->isSaveValueDefault())))
-			{
-				settings[iter->first]["Type"] = typeEnumToString(control->type());
-				settings[iter->first]["Comment"] = control->getComment();
-				settings[iter->first]["Value"] = control->getSaveValue();
-				++num_saved;
-			}
-			else
-			{
-				// Debug spam
-				// llinfos << "Skipping " << control->getName() << llendl;
-			}
+			settings[iter->first]["Type"] = typeEnumToString(control->type());
+			settings[iter->first]["Comment"] = control->getComment();
+			settings[iter->first]["Value"] = control->getSaveValue();
+			++num_saved;
 		}
 	}
 	llofstream file;
@@ -887,6 +902,8 @@ U32 LLControlGroup::loadFromFile(const std::string& filename, bool set_default_v
 		LLControlVariable* existing_control = getControl(name);
 		if(existing_control)
 		{
+			// set_default_values is true when we're loading the initial,
+			// immutable files from app_settings, e.g. settings.xml.
 			if(set_default_values)
 			{
 				// Override all previously set properties of this control.
@@ -908,6 +925,9 @@ U32 LLControlGroup::loadFromFile(const std::string& filename, bool set_default_v
 			}
 			else if(existing_control->isPersisted())
 			{
+				// save_values is specifically false for (e.g.)
+				// SessionSettingsFile and UserSessionSettingsFile -- in other
+				// words, for a file that's supposed to be transient.
 				existing_control->setValue(control_map["Value"], save_values);
 			}
 			// *NOTE: If not persisted and not setting defaults, 
@@ -915,15 +935,47 @@ U32 LLControlGroup::loadFromFile(const std::string& filename, bool set_default_v
 		}
 		else
 		{
-			declareControl(name, 
+			// We've never seen this control before. Either we're loading up
+			// the initial set of default settings files (set_default_values)
+			// -- or we're loading user settings last saved by a viewer that
+			// supports a superset of the variables we know.
+			LLControlVariable* control = declareControl(name, 
 						   typeStringToEnum(control_map["Type"].asString()), 
 						   control_map["Value"], 
 						   control_map["Comment"].asString(), 
 						   persist,
 						   hidefromsettingseditor
 						   );
+			// CHOP-962: if we're loading an unrecognized user setting, make
+			// sure we save it later. If you try an experimental viewer, tweak
+			// a new setting, briefly revert to an old viewer, then return to
+			// the new one, we don't want the old viewer to discard the
+			// setting you changed.
+			if (! set_default_values)
+			{
+				// Using forcePersist() insists that saveToFile() (which calls
+				// LLControlVariable::shouldSave()) must save this control
+				// variable regardless of its value. We can safely set this
+				// LLControlVariable persistent because the 'persistent' flag
+				// is not itself persisted!
+				control->forcePersist();
+				// We want to mention unrecognized user settings variables
+				// (e.g. from a newer version of the viewer) in the log. But
+				// we also arrive here for Boolean variables generated by
+				// the notifications subsystem when the user checks "Don't
+				// show me this again." These aren't declared in settings.xml;
+				// they're actually named for the notification they suppress.
+				// We don't want to mention those. Apologies, this is a bit of
+				// a hack: we happen to know that user settings go into an
+				// LLControlGroup whose name is "Global".
+				if (getKey() == "Global")
+				{
+					LL_INFOS("LLControlGroup") << "preserving unrecognized " << getKey()
+											   << " settings variable " << name << LL_ENDL;
+				}
+			}
 		}
-		
+
 		++validitems;
 	}
 
diff --git a/indra/llxml/llcontrol.h b/indra/llxml/llcontrol.h
index ee7d1d50b7e1de8cb81e372330c9de128fda49ec..5d6ac33780bde1eec23de00661a91925c2260cb5 100755
--- a/indra/llxml/llcontrol.h
+++ b/indra/llxml/llcontrol.h
@@ -101,13 +101,19 @@ class LLControlVariable : public LLRefCount
 	typedef boost::signals2::signal<void(LLControlVariable* control, const LLSD&, const LLSD&)> commit_signal_t;
 
 private:
+	enum
+	{
+		PERSIST_NO,                 // don't save this var
+		PERSIST_YES,                // save this var if differs from default
+		PERSIST_ALWAYS              // save this var even if has default value
+	} mPersist;
+
 	std::string		mName;
 	std::string		mComment;
 	eControlType	mType;
-	bool			mPersist;
 	bool			mHideFromSettingsEditor;
 	std::vector<LLSD> mValues;
-	
+
 	commit_signal_t mCommitSignal;
 	validate_signal_t mValidateSignal;
 	
@@ -131,8 +137,8 @@ class LLControlVariable : public LLRefCount
 	validate_signal_t* getValidateSignal() { return &mValidateSignal; }
 
 	bool isDefault() { return (mValues.size() == 1); }
-	bool isSaveValueDefault();
-	bool isPersisted() { return mPersist; }
+	bool shouldSave(bool nondefault_only);
+	bool isPersisted() { return mPersist != PERSIST_NO; }
 	bool isHiddenFromSettingsEditor() { return mHideFromSettingsEditor; }
 	LLSD get()			const	{ return getValue(); }
 	LLSD getValue()		const	{ return mValues.back(); }
@@ -142,7 +148,8 @@ class LLControlVariable : public LLRefCount
 	void set(const LLSD& val)	{ setValue(val); }
 	void setValue(const LLSD& value, bool saved_value = TRUE);
 	void setDefaultValue(const LLSD& value);
-	void setPersist(bool state);
+	void setPersist(bool state);    // persist or not depending on value
+	void forcePersist();            // always persist regardless of value
 	void setHiddenFromSettingsEditor(bool hide);
 	void setComment(const std::string& comment);
 
@@ -207,19 +214,19 @@ class LLControlGroup : public LLInstanceTracker<LLControlGroup, std::string>
 		virtual void apply(const std::string& name, LLControlVariable* control) = 0;
 	};
 	void applyToAll(ApplyFunctor* func);
-	
-	BOOL declareControl(const std::string& name, eControlType type, const LLSD initial_val, const std::string& comment, BOOL persist, BOOL hidefromsettingseditor = FALSE);
-	BOOL declareU32(const std::string& name, U32 initial_val, const std::string& comment, BOOL persist = TRUE);
-	BOOL declareS32(const std::string& name, S32 initial_val, const std::string& comment, BOOL persist = TRUE);
-	BOOL declareF32(const std::string& name, F32 initial_val, const std::string& comment, BOOL persist = TRUE);
-	BOOL declareBOOL(const std::string& name, BOOL initial_val, const std::string& comment, BOOL persist = TRUE);
-	BOOL declareString(const std::string& name, const std::string &initial_val, const std::string& comment, BOOL persist = TRUE);
-	BOOL declareVec3(const std::string& name, const LLVector3 &initial_val,const std::string& comment,  BOOL persist = TRUE);
-	BOOL declareVec3d(const std::string& name, const LLVector3d &initial_val, const std::string& comment, BOOL persist = TRUE);
-	BOOL declareRect(const std::string& name, const LLRect &initial_val, const std::string& comment, BOOL persist = TRUE);
-	BOOL declareColor4(const std::string& name, const LLColor4 &initial_val, const std::string& comment, BOOL persist = TRUE);
-	BOOL declareColor3(const std::string& name, const LLColor3 &initial_val, const std::string& comment, BOOL persist = TRUE);
-	BOOL declareLLSD(const std::string& name, const LLSD &initial_val, const std::string& comment, BOOL persist = TRUE);
+
+	LLControlVariable* declareControl(const std::string& name, eControlType type, const LLSD initial_val, const std::string& comment, BOOL persist, BOOL hidefromsettingseditor = FALSE);
+	LLControlVariable* declareU32(const std::string& name, U32 initial_val, const std::string& comment, BOOL persist = TRUE);
+	LLControlVariable* declareS32(const std::string& name, S32 initial_val, const std::string& comment, BOOL persist = TRUE);
+	LLControlVariable* declareF32(const std::string& name, F32 initial_val, const std::string& comment, BOOL persist = TRUE);
+	LLControlVariable* declareBOOL(const std::string& name, BOOL initial_val, const std::string& comment, BOOL persist = TRUE);
+	LLControlVariable* declareString(const std::string& name, const std::string &initial_val, const std::string& comment, BOOL persist = TRUE);
+	LLControlVariable* declareVec3(const std::string& name, const LLVector3 &initial_val,const std::string& comment,  BOOL persist = TRUE);
+	LLControlVariable* declareVec3d(const std::string& name, const LLVector3d &initial_val, const std::string& comment, BOOL persist = TRUE);
+	LLControlVariable* declareRect(const std::string& name, const LLRect &initial_val, const std::string& comment, BOOL persist = TRUE);
+	LLControlVariable* declareColor4(const std::string& name, const LLColor4 &initial_val, const std::string& comment, BOOL persist = TRUE);
+	LLControlVariable* declareColor3(const std::string& name, const LLColor3 &initial_val, const std::string& comment, BOOL persist = TRUE);
+	LLControlVariable* declareLLSD(const std::string& name, const LLSD &initial_val, const std::string& comment, BOOL persist = TRUE);
 
 	std::string getString(const std::string& name);
 	std::string getText(const std::string& name);
diff --git a/indra/llxml/tests/llcontrol_test.cpp b/indra/llxml/tests/llcontrol_test.cpp
index ede81956ec6879b896ba09be308211f1b002fc67..c273773c9b43a9223dfc43fc7dba44bb76f67934 100755
--- a/indra/llxml/tests/llcontrol_test.cpp
+++ b/indra/llxml/tests/llcontrol_test.cpp
@@ -128,7 +128,11 @@ namespace tut
 	template<> template<>
 	void control_group_t::test<3>()
 	{
-		int results = mCG->loadFromFile(mTestConfigFile.c_str());
+		// Pass default_values = true. This tells loadFromFile() we're loading
+		// a default settings file that declares variables, rather than a user
+		// settings file. When loadFromFile() encounters an unrecognized user
+		// settings variable, it forcibly preserves it (CHOP-962).
+		int results = mCG->loadFromFile(mTestConfigFile.c_str(), true);
 		LLControlVariable* control = mCG->getControl("TestSetting");
 		LLSD new_value = 13;
 		control->setValue(new_value, FALSE);
diff --git a/indra/newview/app_settings/cmd_line.xml b/indra/newview/app_settings/cmd_line.xml
index 7ab7787d77c874b1b3d075001e3e621023a45664..74117dbd85d28535bc79044ae894fb4e6044f547 100755
--- a/indra/newview/app_settings/cmd_line.xml
+++ b/indra/newview/app_settings/cmd_line.xml
@@ -22,7 +22,8 @@
     <map>
       <key>count</key>
       <integer>1</integer>
-      <!-- Special case. Not mapped to a setting. -->
+      <key>map-to</key>
+      <string>CmdLineChannel</string>
     </map>
 
     <key>console</key>
@@ -96,6 +97,8 @@
 0 - low, 1 - medium, 2 - high, 3 - ultra</string>
       <key>count</key>
       <integer>1</integer>
+      <key>map-to</key>
+      <string>RenderQualityPerformance</string>
     </map>
 
     <key>grid</key>
@@ -370,7 +373,8 @@
       <boolean>true</boolean>
       <key>last_option</key>
       <boolean>true</boolean>
-      <!-- Special case. Not mapped to a setting. -->
+      <key>map-to</key>
+      <string>CmdLineLoginLocation</string>
     </map>
 
     <key>url</key>
@@ -381,7 +385,8 @@
       <integer>1</integer>
       <key>last_option</key>
       <boolean>true</boolean>
-      <!-- Special case. Not mapped to a setting. -->
+      <key>map-to</key>
+      <string>CmdLineLoginLocation</string>
     </map>
 
     <key>usersessionsettings</key>
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index 344079b640c7daac52dd476717171f42d6d601de..4c8860ffe73999544cfc9728ceb3b77c2740fcc2 100755
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -126,6 +126,17 @@
       <key>Value</key>
       <integer>1</integer>
     </map>
+    <key>AnalyzePerformance</key>
+    <map>
+      <key>Comment</key>
+      <string>Request performance analysis for a particular viewer run</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>AnimateTextures</key>
     <map>
       <key>Comment</key>
@@ -1738,6 +1749,17 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
+    <key>CmdLineChannel</key>
+    <map>
+      <key>Comment</key>
+      <string>Command line specified channel name</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>String</string>
+      <key>Value</key>
+      <string />
+    </map>
     <key>CmdLineDisableVoice</key>
     <map>
       <key>Comment</key>
@@ -1784,6 +1806,17 @@
         <string />
       </array>
     </map>
+    <key>CmdLineLoginLocation</key>
+    <map>
+      <key>Comment</key>
+      <string>Startup destination requested on command line</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>String</string>
+      <key>Value</key>
+      <string/>
+    </map>
     <key>ConnectAsGod</key>
     <map>
       <key>Comment</key>
@@ -1916,6 +1949,17 @@
       <key>Value</key>
       <integer>262144</integer>
     </map>
+    <key>CrashOnStartup</key>
+    <map>
+      <key>Comment</key>
+      <string>User-requested crash on viewer startup</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>CreateToolCopyCenters</key>
     <map>
       <key>Comment</key>
@@ -2158,6 +2202,17 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
+    <key>DebugSession</key>
+    <map>
+      <key>Comment</key>
+      <string>Request debugging for a particular viewer session</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>DebugShowColor</key>
     <map>
       <key>Comment</key>
@@ -2972,6 +3027,17 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
+    <key>DisableCrashLogger</key>
+    <map>
+      <key>Comment</key>
+      <string>Do not send crash report to Linden server</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>DisableMouseWarp</key>
     <map>
       <key>Comment</key>
@@ -5217,6 +5283,28 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
+    <key>LogMetrics</key>
+    <map>
+      <key>Comment</key>
+      <string>Log viewer metrics</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>String</string>
+      <key>Value</key>
+      <string/>
+    </map>
+    <key>LogPerformance</key>
+    <map>
+      <key>Comment</key>
+      <string>Log performance analysis for a particular viewer run</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>LogTextureNetworkTraffic</key>
     <map>
       <key>Comment</key>
@@ -6394,6 +6482,17 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
+    <key>NoQuickTime</key>
+    <map>
+      <key>Comment</key>
+      <string>Disable QuickTime for a particular viewer run</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>NoVerifySSLCert</key>
     <map>
       <key>Comment</key>
@@ -9642,6 +9741,17 @@
       <key>Value</key>
       <integer>1</integer>
     </map>
+    <key>ReplaySession</key>
+    <map>
+      <key>Comment</key>
+      <string>Request replay of previously-recorded pilot file</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>RotateRight</key>
     <map>
       <key>Comment</key>
@@ -12858,12 +12968,13 @@
     <key>UserLoginInfo</key>
     <map>
       <key>Comment</key>
-      <string>Users loging data.</string>
+      <string>User login data.</string>
       <key>Persist</key>
       <integer>1</integer>
       <key>Type</key>
       <string>LLSD</string>
       <key>Value</key>
+      <string/>
     </map>
     <key>VFSOldSize</key>
     <map>
diff --git a/indra/newview/app_settings/settings_files.xml b/indra/newview/app_settings/settings_files.xml
index bfc09286e39abd63cadb21d20bf4928230fa690b..4a9e522a96dd036cef7e29b96580d390bb02f539 100755
--- a/indra/newview/app_settings/settings_files.xml
+++ b/indra/newview/app_settings/settings_files.xml
@@ -4,6 +4,9 @@
     <file name="Global"
           file_name="settings.xml"
           required="true"/>
+    <file name="Global"
+          file_name="settings_install.xml"
+          required="false"/>
     <file name="PerAccount"
           file_name="settings_per_account.xml"
           required="true"/>
diff --git a/indra/newview/linux_tools/wrapper.sh b/indra/newview/linux_tools/wrapper.sh
index d8440eebf1c54c4b8a1f687a666285229c71c330..c23401d5a661fd954536fadf9c9b8fa0c7da3779 100755
--- a/indra/newview/linux_tools/wrapper.sh
+++ b/indra/newview/linux_tools/wrapper.sh
@@ -121,37 +121,21 @@ export SAVED_LD_LIBRARY_PATH="${LD_LIBRARY_PATH}"
 
 export LD_LIBRARY_PATH="$PWD/lib:${LD_LIBRARY_PATH}"
 
-# Have to deal specially with gridargs.dat; typical contents look like:
-# --channel "Second Life Test"  --settings settings_test.xml
-# Simply embedding $(<etc/gridargs.dat) into a command line treats each of
-# Second, Life and Developer as separate args -- no good. We need bash to
-# process quotes using eval.
-# First, check if we have been instructed to skip reading in gridargs.dat:
-skip_gridargs=false
-argnum=0
+# Copy "$@" to ARGS array specifically to delete the --skip-gridargs switch.
+# The gridargs.dat file is no more, but we still want to avoid breaking
+# scripts that invoke this one with --skip-gridargs.
+ARGS=()
 for ARG in "$@"; do
-    if [ "--skip-gridargs" == "$ARG" ]; then
-        skip_gridargs=true
-    else
-        ARGS[$argnum]="$ARG"
-        argnum=$(($argnum+1))
+    if [ "--skip-gridargs" != "$ARG" ]; then
+        ARGS[${#ARGS[*]}]="$ARG"
     fi
 done
 
-# Second, read it without scanning, then scan that string. Break quoted words
-# into a bash array. Note that if gridargs.dat is empty, or contains only
-# whitespace, the resulting gridargs array will be empty -- zero entries --
-# therefore "${gridargs[@]}" entirely vanishes from the command line below,
-# just as we want.
-if ! $skip_gridargs ; then
-    eval gridargs=("$(<etc/gridargs.dat)")
-fi
-
 # Run the program.
 # Don't quote $LL_WRAPPER because, if empty, it should simply vanish from the
-# command line. But DO quote "$@": preserve separate args as individually
-# quoted. Similar remarks about the contents of gridargs.
-$LL_WRAPPER bin/do-not-directly-run-secondlife-bin "${gridargs[@]}" "${ARGS[@]}"
+# command line. But DO quote "${ARGS[@]}": preserve separate args as
+# individually quoted.
+$LL_WRAPPER bin/do-not-directly-run-secondlife-bin "${ARGS[@]}"
 LL_RUN_ERR=$?
 
 # Handle any resulting errors
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index f92274dbbd84d0ed7b80bab78b745b4355ef61ac..37f1f114519f15e7da5cd63fc6ed707439dd3767 100755
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -2311,13 +2311,6 @@ bool LLAppViewer::initConfiguration()
 {	
 	//Load settings files list
 	std::string settings_file_list = gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, "settings_files.xml");
-	//LLControlGroup settings_control("SettingsFiles");
-	//llinfos << "Loading settings file list " << settings_file_list << llendl;
-	//if (0 == settings_control.loadFromFile(settings_file_list))
-	//{
- //       llerrs << "Cannot load default configuration file " << settings_file_list << llendl;
-	//}
-
 	LLXMLNodePtr root;
 	BOOL success  = LLXMLNode::parseFile(settings_file_list, root, NULL);
 	if (!success)
@@ -2376,9 +2369,7 @@ bool LLAppViewer::initConfiguration()
 	{
 		c->setValue(true, false);
 	}
-#endif
 
-#ifndef	LL_RELEASE_FOR_DOWNLOAD
 	gSavedSettings.setBOOL("QAMode", TRUE );
 	gSavedSettings.setS32("WatchdogEnabled", 0);
 #endif
@@ -2472,7 +2463,7 @@ bool LLAppViewer::initConfiguration()
 	// Register the core crash option as soon as we can
 	// if we want gdb post-mortem on cores we need to be up and running
 	// ASAP or we might miss init issue etc.
-	if(clp.hasOption("disablecrashlogger"))
+	if(gSavedSettings.getBOOL("DisableCrashLogger"))
 	{
 		llwarns << "Crashes will be handled by system, stack trace logs and crash logger are both disabled" << llendl;
 		LLAppViewer::instance()->disableCrashlogger();
@@ -2545,91 +2536,44 @@ bool LLAppViewer::initConfiguration()
         }
     }
 
-    if(clp.hasOption("channel"))
-    {
-		LLVersionInfo::resetChannel(clp.getOption("channel")[0]);
+	std::string CmdLineChannel(gSavedSettings.getString("CmdLineChannel"));
+	if(! CmdLineChannel.empty())
+	{
+		LLVersionInfo::resetChannel(CmdLineChannel);
 	}
 
 	// If we have specified crash on startup, set the global so we'll trigger the crash at the right time
-	if(clp.hasOption("crashonstartup"))
-	{
-		gCrashOnStartup = TRUE;
-	}
+	gCrashOnStartup = gSavedSettings.getBOOL("CrashOnStartup");
 
-	if (clp.hasOption("logperformance"))
+	if (gSavedSettings.getBOOL("LogPerformance"))
 	{
 		LLFastTimer::sLog = TRUE;
 		LLFastTimer::sLogName = std::string("performance");		
 	}
-	
-	if (clp.hasOption("logmetrics"))
- 	{
- 		LLFastTimer::sMetricLog = TRUE ;
-		// '--logmetrics' can be specified with a named test metric argument so the data gathering is done only on that test
-		// In the absence of argument, every metric is gathered (makes for a rather slow run and hard to decipher report...)
-		std::string test_name = clp.getOption("logmetrics")[0];
+
+	std::string test_name(gSavedSettings.getString("LogMetrics"));
+	if (! test_name.empty())
+	{
+		LLFastTimer::sMetricLog = TRUE ;
+		// '--logmetrics' is specified with a named test metric argument so the data gathering is done only on that test
+		// In the absence of argument, every metric would be gathered (makes for a rather slow run and hard to decipher report...)
 		llinfos << "'--logmetrics' argument : " << test_name << llendl;
-		if (test_name == "")
-		{
-			llwarns << "No '--logmetrics' argument given, will output all metrics to " << DEFAULT_METRIC_NAME << llendl;
-			LLFastTimer::sLogName = DEFAULT_METRIC_NAME;
-		}
-		else
-		{
-			LLFastTimer::sLogName = test_name;
-		}
+		LLFastTimer::sLogName = test_name;
  	}
 
 	if (clp.hasOption("graphicslevel"))
 	{
-		const LLCommandLineParser::token_vector_t& value = clp.getOption("graphicslevel");
-        if(value.size() != 1)
-        {
-			llwarns << "Usage: -graphicslevel <0-3>" << llendl;
-        }
-        else
-        {
-			std::string detail = value.front();
-			mForceGraphicsDetail = TRUE;
-			
-			switch (detail.c_str()[0])
-			{
-				case '0': 
-					gSavedSettings.setU32("RenderQualityPerformance", 0);		
-					break;
-				case '1': 
-					gSavedSettings.setU32("RenderQualityPerformance", 1);		
-					break;
-				case '2': 
-					gSavedSettings.setU32("RenderQualityPerformance", 2);		
-					break;
-				case '3': 
-					gSavedSettings.setU32("RenderQualityPerformance", 3);		
-					break;
-				default:
-					mForceGraphicsDetail = FALSE;
-					llwarns << "Usage: -graphicslevel <0-3>" << llendl;
-					break;
-			}
-        }
-	}
-
-	if (clp.hasOption("analyzeperformance"))
-	{
-		LLFastTimerView::sAnalyzePerformance = TRUE;
+		// User explicitly requested --graphicslevel on the command line.
+		// We expect this switch has already set RenderQualityPerformance.
+		// Check that value for validity; if valid, we'll engage it later.
+		mForceGraphicsDetail =
+			LLFeatureManager::instance().isValidGraphicsLevel(gSavedSettings.getU32("RenderQualityPerformance"));
 	}
 
-	if (clp.hasOption("replaysession"))
-	{
-		gAgentPilot.setReplaySession(TRUE);
-	}
+	LLFastTimerView::sAnalyzePerformance = gSavedSettings.getBOOL("AnalyzePerformance");
+	gAgentPilot.setReplaySession(gSavedSettings.getBOOL("ReplaySession"));
 
-	if (clp.hasOption("nonotifications"))
-	{
-		gSavedSettings.getControl("IgnoreAllNotifications")->setValue(true, false);
-	}
-	
-	if (clp.hasOption("debugsession"))
+	if (gSavedSettings.getBOOL("DebugSession"))
 	{
 		gDebugSession = TRUE;
 		gDebugGL = TRUE;
@@ -2654,20 +2598,16 @@ bool LLAppViewer::initConfiguration()
     // What can happen is that someone can use IE (or potentially 
     // other browsers) and do the rough equivalent of command 
     // injection and steal passwords. Phoenix. SL-55321
-    if(clp.hasOption("url"))
-    {
-		LLStartUp::setStartSLURL(LLSLURL(clp.getOption("url")[0]));
-		if(LLStartUp::getStartSLURL().getType() == LLSLURL::LOCATION) 
-		{  
-			LLGridManager::getInstance()->setGridChoice(LLStartUp::getStartSLURL().getGrid());
-			
-		}  
-    }
-    else if(clp.hasOption("slurl"))
-    {
-		LLSLURL start_slurl(clp.getOption("slurl")[0]);
+	std::string CmdLineLoginLocation(gSavedSettings.getString("CmdLineLoginLocation"));
+	if(! CmdLineLoginLocation.empty())
+	{
+		LLSLURL start_slurl(CmdLineLoginLocation);
 		LLStartUp::setStartSLURL(start_slurl);
-    }
+		if(start_slurl.getType() == LLSLURL::LOCATION) 
+		{  
+			LLGridManager::getInstance()->setGridChoice(start_slurl.getGrid());
+		}
+	}
 
 	const LLControlVariable* skinfolder = gSavedSettings.getControl("SkinCurrent");
 	if(skinfolder && LLStringUtil::null != skinfolder->getValue().asString())
@@ -2810,9 +2750,8 @@ bool LLAppViewer::initConfiguration()
 		LL_DEBUGS("AppInit")<<"set start from NextLoginLocation: "<<nextLoginLocation<<LL_ENDL;
 		LLStartUp::setStartSLURL(LLSLURL(nextLoginLocation));
 	}
-	else if (   (   clp.hasOption("login") || clp.hasOption("autologin"))
-			 && !clp.hasOption("url")
-			 && !clp.hasOption("slurl"))
+	else if ((clp.hasOption("login") || clp.hasOption("autologin"))
+			 && gSavedSettings.getString("CmdLineLoginLocation").empty())
 	{
 		// If automatic login from command line with --login switch
 		// init StartSLURL location.
diff --git a/indra/newview/llappviewermacosx.cpp b/indra/newview/llappviewermacosx.cpp
index 4d340cafa9dfed9769b5a56382e32886a611fd35..c7b437598c2d55c7f90b3ee50ea641898a97c6ff 100755
--- a/indra/newview/llappviewermacosx.cpp
+++ b/indra/newview/llappviewermacosx.cpp
@@ -148,28 +148,13 @@ bool LLAppViewerMacOSX::initParseCommandLine(LLCommandLineParser& clp)
 	// The next two lines add the support for parsing the mac -psn_XXX arg.
 	clp.addOptionDesc("psn", NULL, 1, "MacOSX process serial number");
 	clp.setCustomParser(parse_psn);
-	
-    // First read in the args from arguments txt.
-    const char* filename = "arguments.txt";
-	llifstream ifs(filename, llifstream::binary);
-	if (!ifs.is_open())
-	{
-		llwarns << "Unable to open file" << filename << llendl;
-		return false;
-	}
-	
-	if(clp.parseCommandLineFile(ifs) == false)
-	{
-		return false;
-	}
 
-	// Then parse the user's command line, so that any --url arg can appear last
-	// Succesive calls to clp.parse... will NOT override earlier options. 
+	// parse the user's command line
 	if(clp.parseCommandLine(gArgC, gArgV) == false)
 	{
 		return false;
 	}
-    	
+
 	// Get the user's preferred language string based on the Mac OS localization mechanism.
 	// To add a new localization:
 		// go to the "Resources" section of the project
diff --git a/indra/newview/llcommandlineparser.cpp b/indra/newview/llcommandlineparser.cpp
index 17d403bbe1040b492658123af45a8e606e99037a..7adc6b8c5ec33c1a1753789c6277ef2cbe6c351f 100755
--- a/indra/newview/llcommandlineparser.cpp
+++ b/indra/newview/llcommandlineparser.cpp
@@ -39,13 +39,17 @@
 
 #include <boost/program_options.hpp>
 #include <boost/bind.hpp>
-#include<boost/tokenizer.hpp>
+#include <boost/tokenizer.hpp>
+#include <boost/assign/list_of.hpp>
 
 #if _MSC_VER
 #   pragma warning(pop)
 #endif
 
 #include "llsdserialize.h"
+#include "llerror.h"
+#include <string>
+#include <set>
 #include <iostream>
 #include <sstream>
 
@@ -63,6 +67,18 @@ namespace po = boost::program_options;
 // This could be good or bad, and probably won't matter for most use cases.
 namespace 
 {
+    // List of command-line switches that can't map-to settings variables.
+    // Going forward, we want every new command-line switch to map-to some
+    // settings variable. This list is used to validate that.
+    const std::set<std::string> unmapped_options = boost::assign::list_of
+        ("help")
+        ("set")
+        ("setdefault")
+        ("settings")
+        ("sessionsettings")
+        ("usersessionsettings")
+    ;
+
     po::options_description gOptionsDesc;
     po::positional_options_description gPositionalOptions;
 	po::variables_map gVariableMap;
@@ -561,9 +577,35 @@ void LLControlGroupCLP::configure(const std::string& config_filename, LLControlG
             }
 
             boost::function1<void, const token_vector_t&> callback;
-            if(option_params.has("map-to") && (NULL != controlGroup))
+            if (! option_params.has("map-to"))
+            {
+                // If this option isn't mapped to a settings variable, is it
+                // one of the ones for which that's unreasonable, or did
+                // someone carelessly add a new option? (Make all these
+                // configuration errors fatal so a maintainer will catch them
+                // right away.)
+                std::set<std::string>::const_iterator found = unmapped_options.find(long_name);
+                if (found == unmapped_options.end())
+                {
+                    llerrs << "New command-line option " << long_name
+                           << " should map-to a variable in settings.xml" << llendl;
+                }
+            }
+            else                    // option specifies map-to
             {
                 std::string controlName = option_params["map-to"].asString();
+                if (! controlGroup)
+                {
+                    llerrs << "Must pass gSavedSettings to LLControlGroupCLP::configure() for "
+                           << long_name << " (map-to " << controlName << ")" << llendl;
+                }
+
+                if (! controlGroup->getControl(controlName))
+                {
+                    llerrs << "Option " << long_name << " specifies map-to " << controlName
+                           << " which does not exist" << llendl;
+                }
+
                 callback = boost::bind(setControlValueCB, _1, 
                                        controlName, controlGroup);
             }
diff --git a/indra/newview/llfeaturemanager.cpp b/indra/newview/llfeaturemanager.cpp
index ddb9d3bc4369ab4d03c2dcbd41884776158e5488..9d292ce7bb7a7f3fe6f66642715bcc0c4e9b3dad 100755
--- a/indra/newview/llfeaturemanager.cpp
+++ b/indra/newview/llfeaturemanager.cpp
@@ -30,6 +30,7 @@
 #include <fstream>
 
 #include <boost/regex.hpp>
+#include <boost/assign/list_of.hpp>
 
 #include "llfeaturemanager.h"
 #include "lldir.h"
@@ -52,6 +53,8 @@
 #include "llboost.h"
 #include "llweb.h"
 #include "llviewershadermgr.h"
+#include "llstring.h"
+#include "stringize.h"
 
 #if LL_WINDOWS
 #include "lldxhardware.h"
@@ -187,6 +190,55 @@ void LLFeatureList::dump()
 	LL_DEBUGS("RenderInit") << LL_ENDL;
 }
 
+static const std::vector<std::string> sGraphicsLevelNames = boost::assign::list_of
+	("Low")
+	("LowMid")
+	("Mid")
+	("MidHigh")
+	("High")
+	("HighUltra")
+	("Ultra")
+;
+
+U32 LLFeatureManager::getMaxGraphicsLevel() const
+{
+	return sGraphicsLevelNames.size() - 1;
+}
+
+bool LLFeatureManager::isValidGraphicsLevel(U32 level) const
+{
+	return (level <= getMaxGraphicsLevel());
+}
+
+std::string LLFeatureManager::getNameForGraphicsLevel(U32 level) const
+{
+	if (isValidGraphicsLevel(level))
+	{
+		return sGraphicsLevelNames[level];
+	}
+	return STRINGIZE("Invalid graphics level " << level << ", valid are 0 .. "
+					 << getMaxGraphicsLevel());
+}
+
+S32 LLFeatureManager::getGraphicsLevelForName(const std::string& name) const
+{
+	const std::string FixedFunction("FixedFunction");
+	std::string rname(name);
+	if (LLStringUtil::endsWith(rname, FixedFunction))
+	{
+		// chop off any "FixedFunction" suffix
+		rname = rname.substr(0, rname.length() - FixedFunction.length());
+	}
+	for (S32 i(0), iend(getMaxGraphicsLevel()); i <= iend; ++i)
+	{
+		if (sGraphicsLevelNames[i] == rname)
+		{
+			return i;
+		}
+	}
+	return -1;
+}
+
 LLFeatureList *LLFeatureManager::findMask(const std::string& name)
 {
 	if (mMaskList.count(name))
@@ -620,7 +672,7 @@ void LLFeatureManager::applyRecommendedSettings()
 {
 	// apply saved settings
 	// cap the level at 2 (high)
-	S32 level = llmax(GPU_CLASS_0, llmin(mGPUClass, GPU_CLASS_5));
+	U32 level = llmax(GPU_CLASS_0, llmin(mGPUClass, GPU_CLASS_5));
 
 	llinfos << "Applying Recommended Features" << llendl;
 
@@ -696,62 +748,33 @@ void LLFeatureManager::applyFeatures(bool skipFeatures)
 	}
 }
 
-void LLFeatureManager::setGraphicsLevel(S32 level, bool skipFeatures)
+void LLFeatureManager::setGraphicsLevel(U32 level, bool skipFeatures)
 {
 	LLViewerShaderMgr::sSkipReload = true;
 
 	applyBaseMasks();
-	
-	switch (level)
+
+	// if we're passed an invalid level, default to "Low"
+	std::string features(isValidGraphicsLevel(level)? getNameForGraphicsLevel(level) : "Low");
+	if (features == "Low")
 	{
-		case 0:
 #if LL_DARWIN
-			// This Mac-specific change is to insure that we force 'Basic Shaders' for all Mac
-			// systems which support them instead of falling back to fixed-function unnecessarily
-			// MAINT-2157
-			//
-			if (gGLManager.mGLVersion < 2.1f)
-			{
-				maskFeatures("LowFixedFunction");			
-			}
-			else
-			{ //same as low, but with "Basic Shaders" enabled
-				maskFeatures("Low");
-			}
+		// This Mac-specific change is to insure that we force 'Basic Shaders' for all Mac
+		// systems which support them instead of falling back to fixed-function unnecessarily
+		// MAINT-2157
+		if (gGLManager.mGLVersion < 2.1f)
 #else
-			if (gGLManager.mGLVersion < 3.f || gGLManager.mIsIntel)
-			{ //only use fixed function by default if GL version < 3.0 or this is an intel graphics chip
-				maskFeatures("LowFixedFunction");			
-			}
-			else
-			{ //same as low, but with "Basic Shaders" enabled
-				maskFeatures("Low");
-			}
+		// only use fixed function by default if GL version < 3.0 or this is an intel graphics chip
+		if (gGLManager.mGLVersion < 3.f || gGLManager.mIsIntel)
 #endif
-			break;
-		case 1:
-			maskFeatures("LowMid");
-			break;
-		case 2:
-			maskFeatures("Mid");
-			break;
-		case 3:
-			maskFeatures("MidHigh");
-			break;
-		case 4:
-			maskFeatures("High");
-			break;
-		case 5:
-			maskFeatures("HighUltra");
-			break;
-		case 6:
-			maskFeatures("Ultra");
-			break;
-		default:
-			maskFeatures("Low");
-			break;
+		{
+            // same as Low, but with "Basic Shaders" disabled
+			features = "LowFixedFunction";
+		}
 	}
 
+	maskFeatures(features);
+
 	applyFeatures(skipFeatures);
 
 	LLViewerShaderMgr::sSkipReload = false;
diff --git a/indra/newview/llfeaturemanager.h b/indra/newview/llfeaturemanager.h
index ad72c167432e838d6adeb55ac0701efb5905e57d..3b8d2512362b298c8b4a57c3ee0a8a236b5cb598 100755
--- a/indra/newview/llfeaturemanager.h
+++ b/indra/newview/llfeaturemanager.h
@@ -134,8 +134,18 @@ class LLFeatureManager : public LLFeatureList, public LLSingleton<LLFeatureManag
 	// skipFeatures forces skipping of mostly hardware settings
 	// that we don't want to change when we change graphics
 	// settings
-	void setGraphicsLevel(S32 level, bool skipFeatures);
-	
+	void setGraphicsLevel(U32 level, bool skipFeatures);
+
+	// What 'level' values are valid to pass to setGraphicsLevel()?
+	// 0 is the low end...
+	U32 getMaxGraphicsLevel() const;
+	bool isValidGraphicsLevel(U32 level) const;
+
+	// setGraphicsLevel() levels have names.
+	std::string getNameForGraphicsLevel(U32 level) const;
+	// returns -1 for unrecognized name (hence S32 rather than U32)
+	S32 getGraphicsLevelForName(const std::string& name) const;
+
 	void applyBaseMasks();
 	void applyRecommendedSettings();
 
diff --git a/indra/newview/llfloaterabout.cpp b/indra/newview/llfloaterabout.cpp
index 83fb887d81b3e2ad2c19fa193886d19e7ba3aa3e..163f294d2a13bc7e1c7ef47cd8af3dc23f16cfab 100755
--- a/indra/newview/llfloaterabout.cpp
+++ b/indra/newview/llfloaterabout.cpp
@@ -33,8 +33,10 @@
 
 // Viewer includes
 #include "llagent.h"
+#include "llagentui.h"
 #include "llappviewer.h" 
 #include "llsecondlifeurls.h"
+#include "llslurl.h"
 #include "llvoiceclient.h"
 #include "lluictrlfactory.h"
 #include "llviewertexteditor.h"
@@ -250,12 +252,16 @@ LLSD LLFloaterAbout::getInfo()
 	LLViewerRegion* region = gAgent.getRegion();
 	if (region)
 	{
-		const LLVector3d &pos = gAgent.getPositionGlobal();
+		LLVector3d pos = gAgent.getPositionGlobal();
 		info["POSITION"] = ll_sd_from_vector3d(pos);
+		info["POSITION_LOCAL"] = ll_sd_from_vector3(gAgent.getPosAgentFromGlobal(pos));
 		info["REGION"] = gAgent.getRegion()->getName();
 		info["HOSTNAME"] = gAgent.getRegion()->getHost().getHostName();
 		info["HOSTIP"] = gAgent.getRegion()->getHost().getString();
 		info["SERVER_VERSION"] = gLastVersionChannel;
+		LLSLURL slurl;
+		LLAgentUI::buildSLURL(slurl);
+		info["SLURL"] = slurl.getSLURLString();
 	}
 
 	// CPU
diff --git a/indra/newview/skins/default/xui/da/floater_about.xml b/indra/newview/skins/default/xui/da/floater_about.xml
index fc8bc33096d17eb5a96f689fb1511afe9ef87da1..9206690c8f27a5b44a4effe44932dd4a11b4f28f 100755
--- a/indra/newview/skins/default/xui/da/floater_about.xml
+++ b/indra/newview/skins/default/xui/da/floater_about.xml
@@ -8,7 +8,7 @@
 		Bygget med [COMPILER] version [COMPILER_VERSION]
 	</floater.string>
 	<floater.string name="AboutPosition">
-		Du er ved [POSITION_0,number,1], [POSITION_1,number,1], [POSITION_2,number,1] i regionen [REGION] lokaliseret ved &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
+		Du er ved [POSITION_LOCAL_0,number,1], [POSITION_LOCAL_1,number,1], [POSITION_LOCAL_2,number,1] i regionen [REGION] lokaliseret ved &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
 [SERVER_VERSION]
 [SERVER_RELEASE_NOTES_URL]
 	</floater.string>
diff --git a/indra/newview/skins/default/xui/de/floater_about.xml b/indra/newview/skins/default/xui/de/floater_about.xml
index 4387a619634bab5fd4f2b23cc7044ac666a632d7..524546718327f201848959feadbe37e16b616dbb 100755
--- a/indra/newview/skins/default/xui/de/floater_about.xml
+++ b/indra/newview/skins/default/xui/de/floater_about.xml
@@ -8,7 +8,7 @@
 		Kompiliert mit [COMPILER] version [COMPILER_VERSION]
 	</floater.string>
 	<floater.string name="AboutPosition">
-		Sie befinden sich in [POSITION_0,number,1], [POSITION_1,number,1], [POSITION_2,number,1] in [REGION] auf &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
+		Sie befinden sich in [POSITION_LOCAL_0,number,1], [POSITION_LOCAL_1,number,1], [POSITION_LOCAL_2,number,1] in [REGION] auf &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
 [SERVER_VERSION]
 [SERVER_RELEASE_NOTES_URL]
 	</floater.string>
diff --git a/indra/newview/skins/default/xui/en/floater_about.xml b/indra/newview/skins/default/xui/en/floater_about.xml
index 63eb87f27a17531b618229d8883eaeb11119c0c1..703015af20081678693a8f0d72ad20312f1dd2e4 100755
--- a/indra/newview/skins/default/xui/en/floater_about.xml
+++ b/indra/newview/skins/default/xui/en/floater_about.xml
@@ -22,7 +22,9 @@ Built with [COMPILER] version [COMPILER_VERSION]
 </floater.string>
   <floater.string
      name="AboutPosition">
-You are at [POSITION_0,number,1], [POSITION_1,number,1], [POSITION_2,number,1] in [REGION] located at &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
+You are at [POSITION_LOCAL_0,number,1], [POSITION_LOCAL_1,number,1], [POSITION_LOCAL_2,number,1] in [REGION] located at &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
+SLURL: &lt;nolink&gt;[SLURL]&lt;/nolink&gt;
+(global coordinates [POSITION_0,number,1], [POSITION_1,number,1], [POSITION_2,number,1])
 [SERVER_VERSION]
 [SERVER_RELEASE_NOTES_URL]
 
diff --git a/indra/newview/skins/default/xui/es/floater_about.xml b/indra/newview/skins/default/xui/es/floater_about.xml
index 3696c7e12cfe6bc4ea349126b2612f28ebf70e41..7ca1e3721f48952bafa9d73296033b08219c2e77 100755
--- a/indra/newview/skins/default/xui/es/floater_about.xml
+++ b/indra/newview/skins/default/xui/es/floater_about.xml
@@ -8,7 +8,7 @@
 		Compilado con [COMPILER], versión [COMPILER_VERSION]
 	</floater.string>
 	<floater.string name="AboutPosition">
-		Estás en la posición [POSITION_0,number,1], [POSITION_1,number,1], [POSITION_2,number,1], de [REGION], alojada en &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
+		Estás en la posición [POSITION_LOCAL_0,number,1], [POSITION_LOCAL_1,number,1], [POSITION_LOCAL_2,number,1], de [REGION], alojada en &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
 [SERVER_VERSION]
 [SERVER_RELEASE_NOTES_URL]
 	</floater.string>
diff --git a/indra/newview/skins/default/xui/fr/floater_about.xml b/indra/newview/skins/default/xui/fr/floater_about.xml
index a659cb4245825c358dec94a8d3bc056fdafaa191..d45bdccf3e8f3e75f75fc2f0eb73ec6abe69017a 100755
--- a/indra/newview/skins/default/xui/fr/floater_about.xml
+++ b/indra/newview/skins/default/xui/fr/floater_about.xml
@@ -8,7 +8,7 @@
 		Compilé avec [COMPILER] version [COMPILER_VERSION]
 	</floater.string>
 	<floater.string name="AboutPosition">
-		Vous êtes à [POSITION_0,number,1], [POSITION_1,number,1], [POSITION_2,number,1] dans [REGION], se trouvant à &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
+		Vous êtes à [POSITION_LOCAL_0,number,1], [POSITION_LOCAL_1,number,1], [POSITION_LOCAL_2,number,1] dans [REGION], se trouvant à &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
 [SERVER_VERSION]
 [SERVER_RELEASE_NOTES_URL]
 	</floater.string>
diff --git a/indra/newview/skins/default/xui/it/floater_about.xml b/indra/newview/skins/default/xui/it/floater_about.xml
index c672511fc5a675edcc2515a8a22f2922677b59db..b0fb585fa252f9a118db2282639e6fa26b5a7afe 100755
--- a/indra/newview/skins/default/xui/it/floater_about.xml
+++ b/indra/newview/skins/default/xui/it/floater_about.xml
@@ -8,7 +8,7 @@
 		Generato con [COMPILER] versione [COMPILER_VERSION]
 	</floater.string>
 	<floater.string name="AboutPosition">
-		Tu sei  [POSITION_0,number,1], [POSITION_1,number,1], [POSITION_2,number,1] in [REGION] che si trova a &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
+		Tu sei  [POSITION_LOCAL_0,number,1], [POSITION_LOCAL_1,number,1], [POSITION_LOCAL_2,number,1] in [REGION] che si trova a &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
 [SERVER_VERSION]
 [SERVER_RELEASE_NOTES_URL]
 	</floater.string>
diff --git a/indra/newview/skins/default/xui/ja/floater_about.xml b/indra/newview/skins/default/xui/ja/floater_about.xml
index 6d5df7564521497710b87166d5e4922f0b123d49..eae52c98ec2375af9c3aecadfb7a9fb1b6a1c37d 100755
--- a/indra/newview/skins/default/xui/ja/floater_about.xml
+++ b/indra/newview/skins/default/xui/ja/floater_about.xml
@@ -8,7 +8,7 @@
 		コンパイラー [COMPILER] [COMPILER_VERSION] バージョン
 	</floater.string>
 	<floater.string name="AboutPosition">
-		あなたの現在地は、[POSITION_0,number,1], [POSITION_1,number,1], [POSITION_2,number,1] の [REGION] です。位置は &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; です。([HOSTIP])
+		あなたの現在地は、[POSITION_LOCAL_0,number,1], [POSITION_LOCAL_1,number,1], [POSITION_LOCAL_2,number,1] の [REGION] です。位置は &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; です。([HOSTIP])
 [SERVER_VERSION]
 [SERVER_RELEASE_NOTES_URL]
 	</floater.string>
diff --git a/indra/newview/skins/default/xui/pl/floater_about.xml b/indra/newview/skins/default/xui/pl/floater_about.xml
index 409429ffaa64b2f5584ed937ebbce14fac9dc3fb..61a72ff27de35ec7a4870df323b5e882d4afaf6c 100755
--- a/indra/newview/skins/default/xui/pl/floater_about.xml
+++ b/indra/newview/skins/default/xui/pl/floater_about.xml
@@ -8,7 +8,7 @@
 		Buduj z [COMPILER] wersjÄ… [COMPILER_VERSION]
 	</floater.string>
 	<floater.string name="AboutPosition">
-		Położenie [POSITION_0,number,1], [POSITION_1,number,1], [POSITION_2,number,1] w [REGION] zlokalizowanym w &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
+		Położenie [POSITION_LOCAL_0,number,1], [POSITION_LOCAL_1,number,1], [POSITION_LOCAL_2,number,1] w [REGION] zlokalizowanym w &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
 [SERVER_VERSION]
 [SERVER_RELEASE_NOTES_URL]
 	</floater.string>
diff --git a/indra/newview/skins/default/xui/pt/floater_about.xml b/indra/newview/skins/default/xui/pt/floater_about.xml
index 299f88b22a14211393417e5d8e0520cae587d399..d08926634208f1442c31cf58c7d69f83f8993413 100755
--- a/indra/newview/skins/default/xui/pt/floater_about.xml
+++ b/indra/newview/skins/default/xui/pt/floater_about.xml
@@ -7,7 +7,7 @@
 		Construído com [COMPILER] versão [COMPILER_VERSION]
 	</floater.string>
 	<floater.string name="AboutPosition">
-		Você está em [POSITION_0,number,1], [POSITION_1,number,1], [POSITION_2,number,1] em [REGION] localizado em [HOSTNAME]&lt;/nolink&gt;([HOSTIP])
+		Você está em [POSITION_LOCAL_0,number,1], [POSITION_LOCAL_1,number,1], [POSITION_LOCAL_2,number,1] em [REGION] localizado em [HOSTNAME]&lt;/nolink&gt;([HOSTIP])
 [SERVER_VERSION]
 [SERVER_RELEASE_NOTES_URL]
 	</floater.string>
diff --git a/indra/newview/skins/default/xui/ru/floater_about.xml b/indra/newview/skins/default/xui/ru/floater_about.xml
index bb6266ac9ae4196f593c2cef75cd74262fbd3f83..2b2b3cf453385abf54408b2fb5c3df30fe525ab2 100755
--- a/indra/newview/skins/default/xui/ru/floater_about.xml
+++ b/indra/newview/skins/default/xui/ru/floater_about.xml
@@ -8,7 +8,7 @@
 		Использован компилятор [COMPILER], версия [COMPILER_VERSION]
 	</floater.string>
 	<floater.string name="AboutPosition">
-		Вы в точке [POSITION_0,number,1], [POSITION_1,number,1], [POSITION_2,number,1] в регионе «[REGION]», расположенном на &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
+		Вы в точке [POSITION_LOCAL_0,number,1], [POSITION_LOCAL_1,number,1], [POSITION_LOCAL_2,number,1] в регионе «[REGION]», расположенном на &lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
 [SERVER_VERSION]
 [SERVER_RELEASE_NOTES_URL]
 	</floater.string>
diff --git a/indra/newview/skins/default/xui/tr/floater_about.xml b/indra/newview/skins/default/xui/tr/floater_about.xml
index 9cc9c7a2201ae01263d0ecd8a0ac53c07ce30a6e..4dcf6200c6377d7606f117da9062ee0a6449efed 100755
--- a/indra/newview/skins/default/xui/tr/floater_about.xml
+++ b/indra/newview/skins/default/xui/tr/floater_about.xml
@@ -8,7 +8,7 @@
 		[COMPILER] [COMPILER_VERSION] sürümü ile oluşturuldu
 	</floater.string>
 	<floater.string name="AboutPosition">
-		&lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP]) üzerinde bulunan [REGION] içerisinde [POSITION_0,number,1], [POSITION_1,number,1], [POSITION_2,number,1] konumundasınız
+		&lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP]) üzerinde bulunan [REGION] içerisinde [POSITION_LOCAL_0,number,1], [POSITION_LOCAL_1,number,1], [POSITION_LOCAL_2,number,1] konumundasınız
 [SERVER_VERSION]
 [SERVER_RELEASE_NOTES_URL]
 	</floater.string>
diff --git a/indra/newview/skins/default/xui/zh/floater_about.xml b/indra/newview/skins/default/xui/zh/floater_about.xml
index 643881e416e06e5fa9924085ccb4e01f152fc5e6..1193243c7ecbfeb4776c3099ff0a5ee74e1709f7 100755
--- a/indra/newview/skins/default/xui/zh/floater_about.xml
+++ b/indra/newview/skins/default/xui/zh/floater_about.xml
@@ -8,7 +8,7 @@
 		以 [COMPILER_VERSION] 版本 [COMPILER] 建置
 	</floater.string>
 	<floater.string name="AboutPosition">
-		你的方位是 [POSITION_0,number,1], [POSITION_1,number,1], [POSITION_2,number,1],地區名:[REGION],主機:&lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
+		你的方位是 [POSITION_LOCAL_0,number,1], [POSITION_LOCAL_1,number,1], [POSITION_LOCAL_2,number,1],地區名:[REGION],主機:&lt;nolink&gt;[HOSTNAME]&lt;/nolink&gt; ([HOSTIP])
 [SERVER_VERSION]
 [SERVER_RELEASE_NOTES_URL]
 	</floater.string>
diff --git a/indra/newview/tests/llagentaccess_test.cpp b/indra/newview/tests/llagentaccess_test.cpp
index 3ba25f3c10963b160bfd1dc6a824b341d39cc1d2..1f379ead3202c6df46510317e86f0f700975e42c 100755
--- a/indra/newview/tests/llagentaccess_test.cpp
+++ b/indra/newview/tests/llagentaccess_test.cpp
@@ -49,10 +49,10 @@ LLControlGroup::~LLControlGroup()
 }
 
 // Implementation of just the LLControlGroup methods we requre
-BOOL LLControlGroup::declareU32(const std::string& name, U32 initial_val, const std::string& comment, BOOL persist)
+LLControlVariable* LLControlGroup::declareU32(const std::string& name, U32 initial_val, const std::string& comment, BOOL persist)
 {
 	test_preferred_maturity = initial_val;
-	return true;
+	return NULL;
 }
 
 void LLControlGroup::setU32(const std::string& name, U32 val)
diff --git a/indra/newview/tests/lllogininstance_test.cpp b/indra/newview/tests/lllogininstance_test.cpp
index f038112fd07ccf4ccea9bf7e6d78bea82450c343..4768d9351e47904ddd392feb4f717807a6b57e22 100755
--- a/indra/newview/tests/lllogininstance_test.cpp
+++ b/indra/newview/tests/lllogininstance_test.cpp
@@ -175,8 +175,8 @@ F32 LLControlGroup::getF32(const std::string& name) { return 0.0f; }
 U32 LLControlGroup::saveToFile(const std::string& filename, BOOL nondefault_only) { return 1; }
 void LLControlGroup::setString(const std::string& name, const std::string& val) {}
 std::string LLControlGroup::getString(const std::string& name) { return "test_string"; }
-BOOL LLControlGroup::declareBOOL(const std::string& name, BOOL initial_val, const std::string& comment, BOOL persist) { return TRUE; }
-BOOL LLControlGroup::declareString(const std::string& name, const std::string &initial_val, const std::string& comment, BOOL persist) { return TRUE; }
+LLControlVariable* LLControlGroup::declareBOOL(const std::string& name, BOOL initial_val, const std::string& comment, BOOL persist) { return NULL; }
+LLControlVariable* LLControlGroup::declareString(const std::string& name, const std::string &initial_val, const std::string& comment, BOOL persist) { return NULL; }
 
 #include "lluicolortable.h"
 void LLUIColorTable::saveUserSettings(void)const {}
diff --git a/indra/newview/tests/llsecapi_test.cpp b/indra/newview/tests/llsecapi_test.cpp
index 703603e2dbff8911f91ad9bebff4ada5728149ee..05bac0e23bd1ed7e2c71a629f9f3c4ed80aa4f66 100755
--- a/indra/newview/tests/llsecapi_test.cpp
+++ b/indra/newview/tests/llsecapi_test.cpp
@@ -39,10 +39,10 @@
 LLControlGroup::LLControlGroup(const std::string& name)
 : LLInstanceTracker<LLControlGroup, std::string>(name) {}
 LLControlGroup::~LLControlGroup() {}
-BOOL LLControlGroup::declareString(const std::string& name,
+LLControlVariable* LLControlGroup::declareString(const std::string& name,
                                    const std::string& initial_val,
                                    const std::string& comment,
-                                   BOOL persist) {return TRUE;}
+                                   BOOL persist) {return NULL;}
 void LLControlGroup::setString(const std::string& name, const std::string& val){}
 std::string LLControlGroup::getString(const std::string& name)
 {
diff --git a/indra/newview/tests/llsechandler_basic_test.cpp b/indra/newview/tests/llsechandler_basic_test.cpp
index 02354009760348c40dd7bc1b294d250a9ed0a449..3fbb45f8b46223454e9c64d711e03e4c8fa122bd 100755
--- a/indra/newview/tests/llsechandler_basic_test.cpp
+++ b/indra/newview/tests/llsechandler_basic_test.cpp
@@ -71,10 +71,10 @@ std::string gLastName;
 LLControlGroup::LLControlGroup(const std::string& name)
 : LLInstanceTracker<LLControlGroup, std::string>(name) {}
 LLControlGroup::~LLControlGroup() {}
-BOOL LLControlGroup::declareString(const std::string& name,
+LLControlVariable* LLControlGroup::declareString(const std::string& name,
                                    const std::string& initial_val,
                                    const std::string& comment,
-                                   BOOL persist) {return TRUE;}
+                                   BOOL persist) {return NULL;}
 void LLControlGroup::setString(const std::string& name, const std::string& val){}
 std::string LLControlGroup::getString(const std::string& name)
 {
diff --git a/indra/newview/tests/llslurl_test.cpp b/indra/newview/tests/llslurl_test.cpp
index 09343ef227b209efdc0ecc8ce7522dddc7dcd5f4..a3735388df339a7efa53a3ffcbf3324a3c64bc53 100755
--- a/indra/newview/tests/llslurl_test.cpp
+++ b/indra/newview/tests/llslurl_test.cpp
@@ -37,10 +37,10 @@
 LLControlGroup::LLControlGroup(const std::string& name)
 : LLInstanceTracker<LLControlGroup, std::string>(name) {}
 LLControlGroup::~LLControlGroup() {}
-BOOL LLControlGroup::declareString(const std::string& name,
+LLControlVariable* LLControlGroup::declareString(const std::string& name,
                                    const std::string& initial_val,
                                    const std::string& comment,
-                                   BOOL persist) {return TRUE;}
+                                   BOOL persist) {return NULL;}
 void LLControlGroup::setString(const std::string& name, const std::string& val){}
 
 std::string gCmdLineLoginURI;
diff --git a/indra/newview/tests/llviewerhelputil_test.cpp b/indra/newview/tests/llviewerhelputil_test.cpp
index 710881d81124587d8dcb5512a030732880b87c8b..8e9cc7111bc56846f2cf23bd15a81867f16cf1a8 100755
--- a/indra/newview/tests/llviewerhelputil_test.cpp
+++ b/indra/newview/tests/llviewerhelputil_test.cpp
@@ -49,10 +49,10 @@ static std::string gOS;
 LLControlGroup::LLControlGroup(const std::string& name)
 	: LLInstanceTracker<LLControlGroup, std::string>(name) {}
 LLControlGroup::~LLControlGroup() {}
-BOOL LLControlGroup::declareString(const std::string& name,
+LLControlVariable* LLControlGroup::declareString(const std::string& name,
 				   const std::string& initial_val,
 				   const std::string& comment,
-				   BOOL persist) {return TRUE;}
+				   BOOL persist) {return NULL;}
 void LLControlGroup::setString(const std::string& name, const std::string& val){}
 std::string LLControlGroup::getString(const std::string& name)
 {
diff --git a/indra/newview/tests/llviewernetwork_test.cpp b/indra/newview/tests/llviewernetwork_test.cpp
index a1e97ea17eac6641eb0788d97b0fa1a1aac1e595..f80c02475ddc301955e8468c60565f5444733268 100755
--- a/indra/newview/tests/llviewernetwork_test.cpp
+++ b/indra/newview/tests/llviewernetwork_test.cpp
@@ -37,10 +37,10 @@
 LLControlGroup::LLControlGroup(const std::string& name)
 : LLInstanceTracker<LLControlGroup, std::string>(name) {}
 LLControlGroup::~LLControlGroup() {}
-BOOL LLControlGroup::declareString(const std::string& name,
+LLControlVariable* LLControlGroup::declareString(const std::string& name,
                                    const std::string& initial_val,
                                    const std::string& comment,
-                                   BOOL persist) {return TRUE;}
+                                   BOOL persist) {return NULL;}
 void LLControlGroup::setString(const std::string& name, const std::string& val){}
 
 std::string gCmdLineLoginURI;
diff --git a/indra/newview/viewer_manifest.py b/indra/newview/viewer_manifest.py
index 53a3e732caa52401624638432d38645154d6c9d2..206f81cdc20af0108b02232033eef4cd5f7c8654 100755
--- a/indra/newview/viewer_manifest.py
+++ b/indra/newview/viewer_manifest.py
@@ -34,9 +34,15 @@
 import time
 import random
 viewer_dir = os.path.dirname(__file__)
-# add llmanifest library to our path so we don't have to muck with PYTHONPATH
-sys.path.append(os.path.join(viewer_dir, '../lib/python/indra/util'))
-from llmanifest import LLManifest, main, proper_windows_path, path_ancestors
+# Add indra/lib/python to our path so we don't have to muck with PYTHONPATH.
+# Put it FIRST because some of our build hosts have an ancient install of
+# indra.util.llmanifest under their system Python!
+sys.path.insert(0, os.path.join(viewer_dir, os.pardir, "lib", "python"))
+from indra.util.llmanifest import LLManifest, main, proper_windows_path, path_ancestors
+try:
+    from llbase import llsd
+except ImportError:
+    from indra.base import llsd
 
 class ViewerManifest(LLManifest):
     def is_packaging_viewer(self):
@@ -99,6 +105,21 @@ def construct(self):
                     self.path("dictionaries")
                     self.end_prefix(pkgdir)
 
+                # CHOP-955: If we have "sourceid" in the build process
+                # environment, generate it into settings_install.xml.
+                try:
+                    sourceid = os.environ["sourceid"]
+                except KeyError:
+                    # no sourceid, no settings_install.xml file
+                    pass
+                else:
+                    # Single-entry subset of the LLSD content of settings.xml
+                    content = dict(sourceid=dict(Comment='Identify referring agency to Linden web servers',
+                                                 Persist=1,
+                                                 Type='String',
+                                                 Value=sourceid))
+                    self.put_in_file(llsd.format_pretty_xml(content), "settings_install.xml")
+
                 self.end_prefix("app_settings")
 
             if self.prefix(src="character"):
@@ -196,24 +217,26 @@ def flags_list(self):
         """ Convenience function that returns the command-line flags
         for the grid"""
 
-        # Set command line flags relating to the target grid
-        grid_flags = ''
-        if not self.default_grid():
-            grid_flags = "--grid %(grid)s "\
-                         "--helperuri http://preview-%(grid)s.secondlife.com/helpers/" %\
-                           {'grid':self.grid()}
-
-        # Deal with settings 
-        setting_flags = ''
-        if not self.default_channel() or not self.default_grid():
-            if self.default_grid():
-                setting_flags = '--settings settings_%s.xml'\
-                                % self.channel_lowerword()
-            else:
-                setting_flags = '--settings settings_%s_%s.xml'\
-                                % (self.grid(), self.channel_lowerword())
-                                                
-        return " ".join((grid_flags, setting_flags)).strip()
+        # The original role of this method seems to have been to build a
+        # grid-specific viewer: one that would, on launch, preselect a
+        # particular grid. (Apparently that dates back to when the protocol
+        # between viewer and simulator required them to be updated in
+        # lockstep, so that "the beta grid" required "a beta viewer.") But
+        # those viewer command-line switches no longer work without tweaking
+        # user_settings/grids.xml. In fact, going forward, it's unclear what
+        # use case that would address.
+
+        # This method also set a channel-specific (or grid-and-channel-
+        # specific) user_settings/settings_something.xml file. It has become
+        # clear that saving user settings in a channel-specific file causes
+        # more problems (confusion) than it solves, so we've discontinued that.
+
+        # In fact we now avoid forcing viewer command-line switches at all,
+        # instead introducing a settings_install.xml file. Command-line
+        # switches don't aggregate well; for instance the generated --channel
+        # switch actually prevented the user specifying --channel on the
+        # command line. Settings files have well-defined override semantics.
+        return None
 
     def extract_names(self,src):
         try:
@@ -529,8 +552,7 @@ def package_finish(self):
             'final_exe' : self.final_exe(),
             'grid':self.args['grid'],
             'grid_caps':self.args['grid'].upper(),
-            # escape quotes becase NSIS doesn't handle them well
-            'flags':self.flags_list().replace('"', '$\\"'),
+            'flags':'',
             'channel':self.channel(),
             'channel_oneword':self.channel_oneword(),
             'channel_unique':self.channel_unique(),
@@ -757,9 +779,6 @@ def path_optional(src, dst):
 
                     self.end_prefix("llplugin")
 
-                # command line arguments for connecting to the proper grid
-                self.put_in_file(self.flags_list(), 'arguments.txt')
-
                 self.end_prefix("Resources")
 
             self.end_prefix("Contents")
@@ -805,10 +824,6 @@ def package_finish(self):
                                  'bundle': self.get_dst_prefix()
                 })
 
-        channel_standin = 'Second Life Viewer'  # hah, our default channel is not usable on its own
-        if not self.default_channel():
-            channel_standin = self.channel()
-
         imagename="SecondLife_" + '_'.join(self.args['version'])
 
         # MBW -- If the mounted volume name changes, it breaks the .DS_Store's background image and icon positioning.
@@ -926,9 +941,6 @@ def construct(self):
             self.path("install.sh")
             self.end_prefix("linux_tools")
 
-        # Create an appropriate gridargs.dat for this package, denoting required grid.
-        self.put_in_file(self.flags_list(), 'etc/gridargs.dat')
-
         if self.prefix(src="", dst="bin"):
             self.path("secondlife-bin","do-not-directly-run-secondlife-bin")
             self.path("../linux_crash_logger/linux-crash-logger","linux-crash-logger.bin")