Convince Geenzo code to get a little DeMorgan in it.

Trophy Unlocked: make all alpha textures partcipate in picking.

Fix direct light matching across alpha/blended-material/deferred.

Get diffuse lighting to match from Low to Ultra.

Will wait for a response from @graham_linden regarding moving the sRGB conversion functions in llmath.h to llrender.

Thou shall always read the sky cubemap as sRGB using hardware sampling.

Mods to make merge with viewer-release have less whitespace-only change and fix diffs between EEP and VR.

libatmosphere integrated in indra/llrender/llatmosphere.cpp

Still working on runtime shaders to use libatmosphere precomputed atmospherics textures

for possibly-uninitialized data member in BlockTimer::BlockTimer.

NickyD suggested a real fix.

MAINT-4009: Ensuring that the pick mask for the LLImageGL is always properly freed during its cleanup method.

changed claimMem and disclaimMem behavior to not pass through argument
added more mem tracking stats to floater_stats

another attempt to move mem stat into base class

continued conversion to units system
made units perform type promotion correctly and preserve type in arithmetic
e.g. can now do LLVector3 in units
added typedefs for remaining common unit types, including implicits

added convenience types for units F32Seconds, etc.

replace llinfos, lldebugs, etc with new LL_INFOS(), LL_DEBUGS(), etc.

changed Units macros and argument order to make it more clear
optimized units for integer types
fixed merging of periodicrecordings...should eliminate duplicate entries in sceneloadmonitor history

Put back normal map and spec map initializers/destruction, delete FMOD refs (unneeded with FMODEX), make indra.l/y safe for bison >= 2.7

Reviewed by Graham

cleaning up build
moved most includes of windows.h to llwin32headers.h to disable min/max macros, etc
streamlined Time class and consolidated functionality in BlockTimer class
llfasttimer is no longer included via llstring.h, so had to add it manually in several places

Finished making LLUnit implicitly convertible to/from scalar integer values
cleaned up test code