Implement cull distances for GLSL 4.5 (but not as an extension yet, just a 4.5 feature).

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@27714 e7fa87d3-cd2b-0410-9028-fcbf551c1848
20 files changed