Add more location aliasing checks

When location aliasing, the aliases sharing the location must have the same underlying numerical type and bit width (floating-point or integer, 32-bit versus 64-bit, etc.) and the same auxiliary storage and interpolation qualification.
This adds checks for the "patch" and "sample" qualifiers, and also relaxes the checks when the signedness of integer types differs.

Test/ps_sample.frag

@@ -0,0 +1,17 @@
+#version 430 core
+#extension GL_ARB_enhanced_layouts : require
+
+layout (location = 1, component = 0)  flat in uint gohan;
+layout (location = 1, component = 2) sample flat in uvec2 goten;
+
+in  vec4 gs_fs;
+out vec4 fs_out;
+
+void main()
+{
+    vec4 result = gs_fs;
+
+
+
+    fs_out = result;
+}