Reorganized core/ directory, it was too fatty already

-Removed FuncRef, since Callable makes it obsolete
-Removed int_types.h as its obsolete in c++11+
-Changed color names code

core/input/input_map.h

@@ -31,8 +31,8 @@
 #ifndef INPUT_MAP_H
 #define INPUT_MAP_H
 
-#include "core/class_db.h"
 #include "core/input/input_event.h"
+#include "core/object/class_db.h"
 
 class InputMap : public Object {
 	GDCLASS(InputMap, Object);