glsl: add ARB_texture_cube_map_array support (v2)

This adds all the new builtins + the new sampler types,
and hooks them up if the extension is supported.

v2: fix missing signatures for grad/lod
fix missing textureSize clarifications
fix compare vs starts with usage

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

src/glsl/glcpp/glcpp-parse.y

@@ -1187,6 +1187,9 @@ glcpp_parser_create (const struct gl_extensions *extensions, int api)
 
 	   if (extensions->ARB_uniform_buffer_object)
 	      add_builtin_define(parser, "GL_ARB_uniform_buffer_object", 1);
+
+	   if (extensions->ARB_texture_cube_map_array)
+	      add_builtin_define(parser, "GL_ARB_texture_cube_map_array", 1);
 	}
 
 	language_version = 110;