Add missing check that a function call is not using the same name as a...

Add missing check that a function call is not using the same name as a variable hiding the function's name.  Also, support version 110 separate name spaces for functions and variable names.


git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@24480 e7fa87d3-cd2b-0410-9028-fcbf551c1848