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/packet_peer.h

@@ -31,9 +31,9 @@
 #ifndef PACKET_PEER_H
 #define PACKET_PEER_H
 
-#include "core/class_db.h"
 #include "core/io/stream_peer.h"
-#include "core/ring_buffer.h"
+#include "core/object/class_db.h"
+#include "core/templates/ring_buffer.h"
 
 class PacketPeer : public Reference {
 	GDCLASS(PacketPeer, Reference);