Add basic intra-stage linking validation for matching types and qualification of uniforms/ins/outs/globals, function body duplication, and mixing ES/non-ES shaders.

Still need to handle arrays and built-in redeclarations, and many more rules, but this puts the basics in place.


git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@23225 e7fa87d3-cd2b-0410-9028-fcbf551c1848

Test/link1.frag

@@ -0,0 +1,24 @@
+#version 130
+
+uniform vec4 uv4;
+uniform vec3 glass;
+
+const int ci = 8;
+
+vec4 a = ci * uv4;
+
+in vec3 iv3;
+in vec4 cup;
+
+void main()
+{
+}
+
+vec4 b = ci * a;
+
+ivec2 foo(mat2 m)
+{
+    return ivec2(m[0]);
+}
+
+vec4 c = b * b;