Some rationalization of TIntermediate (to own it's own tree root) and TParseHelper for better encapsulation.  Needed by some upcoming intra-stage link validation.


git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@22914 e7fa87d3-cd2b-0410-9028-fcbf551c1848