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/debugger/remote_debugger.h

@@ -31,13 +31,13 @@
 #ifndef REMOTE_DEBUGGER_H
 #define REMOTE_DEBUGGER_H
 
-#include "core/array.h"
-#include "core/class_db.h"
 #include "core/debugger/debugger_marshalls.h"
 #include "core/debugger/engine_debugger.h"
 #include "core/debugger/remote_debugger_peer.h"
-#include "core/string_name.h"
-#include "core/ustring.h"
+#include "core/object/class_db.h"
+#include "core/string/string_name.h"
+#include "core/string/ustring.h"
+#include "core/variant/array.h"
 
 class RemoteDebugger : public EngineDebugger {
 public: