This is to avoid all need to do text comparison of built-in function names when consuming the AST. All built-in functions get enumerants. Will want to turn on soon. See PureOperatorBuiltins. See issue #8.
git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@31512 e7fa87d3-cd2b-0410-9028-fcbf551c1848