Old uses should still work as they did before. Also encapsulated use of these flags during parsing, for the parse context. Added SPIR-V version to -v.
git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@30032 e7fa87d3-cd2b-0410-9028-fcbf551c1848