mesa: include mtypes.h less

- remove mtypes.h from most header files
- add main/menums.h for often used definitions
- remove main/core.h

v2: fix radv build

Reviewed-by: Brian Paul <brianp@vmware.com>

src/compiler/glsl/lower_blend_equation_advanced.cpp

@@ -29,6 +29,7 @@
 #include "program/prog_statevars.h"
 #include "util/bitscan.h"
 #include "builtin_functions.h"
+#include "main/mtypes.h"
 
 using namespace ir_builder;