Use WSTRINGIZE(), LL_TO_WSTRING(), wstringize() to produce required wide
strings. Use a lambda for callback that sends log file; use LLDir, if set, to
find the log file.

Introduce BUGSPLAT CMake variable to allow suppressing BugSplat.
Make BUGSPLAT CMake variable set LL_BUGSPLAT for C++ compilations.

Set viewer version macros on llappviewerwin32.cpp, llappviewerlinux.cpp and
llappdelegate-objc.mm -- because BugSplat needs the viewer version data, and
because the macOS BugSplat hook is engaged in an Objective-C++ function we
override in the app delegate.

First pass at adding BugSplat code to viewer and turning off existing (Google Breakpad) exception handling

The LLApp API used to consist of init(), mainLoop(), cleanup() methods. This
makes sense -- but on Mac that structure was being subverted. The method
called mainLoop() was in fact being called once per frame. There was
initialization code in the method, which (on Mac) needed to be skipped with an
already-initialized bool. There was a 'while' loop which (on Mac) needed to be
turned into an 'if' instead so the method would return after every frame.

Rename LLApp::mainLoop() to frame(). Propagate through subclasses LLAppViewer
and LLCrashLogger. Document the fact that frame() returns true to mean "done."
(This was always the case, but had to be inferred from the code.)

Rename the Mac Objective-C function mainLoop to oneFrame. Rename the C++ free
function it calls from runMainLoop() to pumpMainLoop(). Add comments to
llappdelegate-objc.mm explaining (inferred) control flow.

Change the Linux viewer main() and the Windows viewer WINMAIN() from a single
LLAppViewer::mainLoop() call to repeatedly call frame() until it returns true.

Move initialization code from the top of LLAppViewer::frame() to the init()
method, where it more properly belongs. Remove corresponding
mMainLoopInitialized flag (and all references) from LLAppViewer.

Remove 'while (! LLApp::isExiting())' (or on Mac, 'if (! LLApp::isExiting())')
from LLAppViewer::frame() -- thus unindenting the whole body of the 'while'
and causing many lines of apparent change. (Apologies to reviewers.)

There are four LLApp states: APP_STATUS_RUNNING, APP_STATUS_QUITTING,
APP_STATUS_STOPPED and APP_STATUS_ERROR. Change LLAppViewer::frame() return
value from (isExiting()) (QUITTING or ERROR) to (! isRunning()). I do not know
under what circumstances the state might transition to STOPPED during a
frame() call, but I'm quite sure that if it does, we don't want to call
frame() again. We only want a subsequent call if the state is RUNNING.

Also rename mainLoop() method in LLCrashLogger subclasses
LLCrashLoggerWindows, LLCrashLoggerMac, LLCrashLoggerLinux. Of course it's
completely up to the frame() method whether to yield control; none of those in
fact do. Honor protocol by returning true (frame() is done), even though each
one's main() caller ignores the return value.

In fact LLCrashLoggerWindows::mainLoop() wasn't using the return protocol
correctly anyway, returning wParam or 0 or 1 -- possibly because the return
protocol was never explicitly documented. It should always return true: "I'm
done, don't call me again."

consolidated most indra-specific constants in llcommon under indra_constants.h
fixed issues with operations on mixed unit types (implicit and explicit)
made LL_INFOS() style macros variadic in order to subsume other logging methods
such as ll_infos
added optional tag output to error recorders

Include signal.h instead of replicating typedef to avoid errors from redefining it...provides better compat with non-Ubuntu distros

This is a patch originally written by Robin Cornelius.
I made it work with Google Breakpad.

Also, clean out old minidump files when we start up.

This was only used for the Linux client to dump a stack trace to
stack_trace.log, which is no longer needed now that we are using
Google Breakpad.

I also removed all of the stack printing code from llappviewerlinux.cpp.

Using Alain's Darwin reporter callback was all that was needed.

Also replaced the call that exposed the breakpad exception class
with a call to just write out the minidump, as that was the only
reason for exposing it. Now clients don't need to know about
Google Breakpad.

Mac crash behavior matches windows and linux: report on crash (not after restart).  This is OK because we use Breakpad generated minidumps instead of OS generated ones.

Also moved headers into libraries/include/google_breakpad.
Mac and linux packages to come shortly.

This bugs me in a minor way.  Did a search-and-cleanup on various swear words.

and reduce unnecessary dependencies and incredibuild wedging.  Hopefully in
the long run this will reduce build time.  Also cleaned up a lot of header
file usage to conform better to the coding standard.

reviewed by james and steve.

Includes:
* DEV-31909 VWR-13251: Revise lscript_library.cpp to allow localization of LSL editor hovertips
* DEV-21938 llSHA1String does not appear where expected in the dropdown "Insert" menu in the LSL editor
* Some cleanup to llerror so that it doesn't depend on llfixedbuffer
* A few misc. server specific changes not related to the texture-pipeline changes (llapp, lloptioninterface)

Moves libllcommon.so to a staging dir for unit tests to work
and gets rid of LL_COMMON_API in forward declarations

Result of svn merge -r119432:120464 svn+ssh://svn/svn/linden/branches/http_database/merge-03 into trunk. QAR-1462

svn merge -r108142:108148 svn+ssh://svn.lindenlab.com/svn/linden/qa/maint-server/maint-server-5-r108113

Result of svn merge -r107256:107258 svn+ssh://svn/svn/user/phoenix/license_2009_merge into trunk. QAR-1165

  svn merge -r99446:104838 svn+ssh://svn.lindenlab.com/svn/linden/branches/server/server-1.25

Conflicts resolved by Prospero, except for one scary conflict in
SendConfirmationEmail.php which was resolved by jarv.

merge Branch_1-20-Viewer -r 84060 : 84432 -> release