docs: add GL_ARB_gpu_shader_fp64 and OpenGL 4.0 support for Intel Haswell.
docs: add GL_ARB_gpu_shader_fp64 and OpenGL 4.0 support for Intel Haswell.

Reviewed-by: Tapani Pälli <cdcb67a5e49297de94340ca09f25994bd5e7f762@intel.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler