Flesh out 4.x block redeclaration semantics:

- hide non-redeclared anonymous members
 - array size limit checking
 - illegal member qualifiers
 - additional members


git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@24406 e7fa87d3-cd2b-0410-9028-fcbf551c1848

Test/420.geom

@@ -43,3 +43,8 @@ void foo4()
     v4.x = 3.2;                // ERROR
     v4.xy;   // should have non-uniform type
 }
+
+out gl_PerVertex {
+    float gl_PointSize[1];  // ERROR, adding array
+    float gl_ClipDistance;  // ERROR, removing array
+};