Add redeclarations of built-in blocks.

Note: lots of test results changed due to listing the members of a block when printing types.

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@23682 e7fa87d3-cd2b-0410-9028-fcbf551c1848

Test/410.geom

@@ -4,3 +4,29 @@ void main()
 {
     gl_ViewportIndex = 7;
 }
+
+in gl_PerVertex {
+    float gl_PointSize;
+} myIn[];  // ERROR, can't redeclare a different name
+
+in gl_PerVertex {
+    float gl_PointSize;
+} gl_myIn[];  // ERROR, can't redeclare a different name
+
+in gl_PerVertex {
+    float gl_PointSize;
+} gl_in[];
+
+in gl_PerVertex {
+    float gl_PointSize;
+} gl_in[];     // ERROR, can't do it again
+
+out gl_PerVertex {
+    float gl_PointSize;
+};
+
+void foo()
+{
+    float p = gl_in[1].gl_PointSize;   // use of redeclared
+    gl_PointSize = p;   // use of redeclared
+}