Add preprocessor support for parsing doubles.
Add double support to the flex stage.
Put in some of the basic double supported needed in the front end.
Add generic support for version numbers in the preprocessor, and the core, compatibility, and es profiles.
git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@19949 e7fa87d3-cd2b-0410-9028-fcbf551c1848
For 4.2, largely, it is only the grammar that is working. Productions and semantics are mostly missing. Lexical analysis is mostly done, but not in the preprocessor, which still can't handle uint and double literals.
The grammar and token names are reorganized to match the specification, to allow easier comparison between the specification and the working grammar.
git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@19946 e7fa87d3-cd2b-0410-9028-fcbf551c1848
