Put in correct rules for multiple versions of qualification and typing of inputs and outputs.  Also, removed EvqAttribute, merging it with EvqVaryingIn.


git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@21064 e7fa87d3-cd2b-0410-9028-fcbf551c1848