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/io/config_file.cpp

@@ -32,7 +32,7 @@
 
 #include "core/io/file_access_encrypted.h"
 #include "core/os/keyboard.h"
-#include "core/variant_parser.h"
+#include "core/variant/variant_parser.h"
 
 PackedStringArray ConfigFile::_get_sections() const {
 	List<String> s;