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'
Merge remote-tracking branch 'upstream/master'
Fix the bug in which right click and then delete key would no longer work to delete objects

Navigation handling without a currently selected menu entry now only happens if key is up or down arrow
(mind the space changes)
Prevent LLFace::getGeometryVolume from overwriting vbos past their end.

Possible fix for a crash in LLFace::getGeometryVolume()
Patch by NickyD/Firestorm
Crash signature: 14 and 20
Merge branch 'master' of https://github.com/MelanieT/SingularityViewer
Merge branch 'master' of git://github.com/Lirusaito/SingularityViewer
add spanish translation for prefs editor open log in windows option
Modernize constructor of LLPreviewSound and cure crash signature 314