Don't explicitly set LIBGL_DRIVERS_PATH by default; breaks autodetection
Fix shader compilation/out-of-spec issues
Merge remote-tracking branch 'upstream/master'

Conflicts:
	indra/llrender/llshadermgr.cpp (resolved)
Attempt to fix linking issues
I really really hate you microsoft. More windows sdk cmake poke
Warning fix
Merge branch 'master' of https://github.com/LightDrake/SingularityViewer
Fix a Clang error
Unbreak OSX Make File builds
Merge branch 'master' of https://github.com/LightDrake/SingularityViewer
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Fixed a shutdown crash in LLAudioEngine::assetCallback, and fixed behavior when soundsource re-issues a sound whilst a sound is currently playing for same source. (LLAudioChannel[Impl]::play now re-starts sound if already playing)
Merge branch 'master' of https://github.com/singularity-viewer/SingularityViewer.git
Fixed a couple obscure crashes.
[Warnings] Fix linux32 warnings again (missed some spots)
Merge branch 'master' of git://github.com/Shyotl/SingularityViewer
Breaking pad: restore 'Ask' preference for sending reports, cleanup remaining out-of-process bits
Don't log debug level info during shader loading