[Mesa-dev] Merge of glsl2 branch to master

[Aras Pranckevicius]

> Thanks for all your diligence with Windows portability. There are still
> some issues with MSVC but it's pretty minor stuff (e.g log2f & exp2f).

FYI, implementations of truncf, log2f, exp2f for MSVC in my GLSL2
fork: http://github.com/aras-p/glsl-optimizer/blob/glsl2/src/glsl/msvc/msvccompat.h
(I just dumped them into a new "msvccompat.h" file, but for official
Mesa some better place should be used I guess)


-- 
Aras Pranckevičius
work: http://unity3d.com
home: http://aras-p.info