Fixes failing opengl32:sw_extensions test.
The test expects version `1.1.0` which is what Windows reports,
and ReactOS Mesa3D was reporting just `1.1`.
clang-cl 10:
'.../attrib.h(32,9): warning: 'ATTRIB_H' is used as a header guard here, followed by #define of a different macro [-Wheader-guard]'
Addendum to 5f2bebf.
CORE-7499 CORE-14306
With this commit, we now use a forked version of MESA which only supports OpenGL 1.1, like the windows implementation does.
It exposes :
- The same pixel formats
- The same set of extensions
- Nothing more
All of this without taking 10% of your build time.
If you need a more modern option, look at the MESA package from Rapps, which is (and must be) maintained outside of this code tree.
CORE-7499
