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

scene/debugger/scene_debugger.h

@@ -31,10 +31,10 @@
 #ifndef SCENE_DEBUGGER_H
 #define SCENE_DEBUGGER_H
 
-#include "core/array.h"
-#include "core/class_db.h"
-#include "core/pair.h"
-#include "core/ustring.h"
+#include "core/object/class_db.h"
+#include "core/string/ustring.h"
+#include "core/templates/pair.h"
+#include "core/variant/array.h"
 
 class Script;