-Renamed GlobalConfig to ProjectSettings, makes more sense.

-Added system for feature overrides, it's pretty cool :)

servers/physics_2d/physics_2d_server_wrap_mt.h

@@ -31,7 +31,7 @@
 #define PHYSICS2DSERVERWRAPMT_H
 
 #include "command_queue_mt.h"
-#include "global_config.h"
+#include "project_settings.h"
 #include "os/thread.h"
 #include "servers/physics_2d_server.h"