Add interface blocks as a basic type and handle uniform blocks that have an instance name. Includes handling qualifiers on structure members.

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@21093 e7fa87d3-cd2b-0410-9028-fcbf551c1848

glslang/Include/BaseTypes.h

@@ -49,6 +49,7 @@ enum TBasicType {
     EbtBool,
     EbtSampler,
     EbtStruct,
+    EbtBlock,
     EbtNumTypes
 };