VWR-20749 (SNOW-624) FIXED Fix compiling the viewer with Boost 1.42

doc/contributions.txt

@@ -151,6 +151,7 @@ blino Nakamura
 Boroondas Gupte
 	SNOW-278
 	SNOW-527
+	SNOW-624
 	VWR-233
 	WEB-262
 Bulli Schumann

indra/newview/llcommandlineparser.cpp

@@ -53,7 +53,7 @@
 
 namespace po = boost::program_options;
 
-// *NTOE:MEP - Currently the boost object reside in file scope. 
+// *NOTE:MEP - Currently the boost object reside in file scope.
 // This has a couple of negatives, they are always around and 
 // there can be only one instance of each. 
 // The plus is that the boost-ly-ness of this implementation is 
@@ -156,6 +156,12 @@ class LLCLPValue : public po::value_semantic_codecvt_helper<char>
         return mIsComposing;
     }
 
+	// Needed for boost 1.42
+	virtual bool is_required() const
+	{
+		return false; // All our command line options are optional.
+	}
+
     virtual bool apply_default(boost::any& value_store) const
     {
         return false; // No defaults.
@@ -169,7 +175,6 @@ class LLCLPValue : public po::value_semantic_codecvt_helper<char>
         {
            mNotifyCallback(*value);
         }
-
     }
 
 protected: