move unmaintained files into outdated folder

If an old port is resurrected to work with current version code, its files
can be relocated to the appropriate sys or win folder as required.

In the meantime, the burden of upkeep can be avoided for the stuff in the
outdated folder for now.

outdated/sys/wince/mhmsgwnd.h

@@ -0,0 +1,15 @@
+/* NetHack 3.6	mhmsgwnd.h	$NHDT-Date: 1432512798 2015/05/25 00:13:18 $  $NHDT-Branch: master $:$NHDT-Revision: 1.9 $ */
+/* Copyright (C) 2001 by Alex Kompel 	 */
+/* NetHack may be freely redistributed.  See license for details. */
+
+#ifndef MSWINMessageWindow_h
+#define MSWINMessageWindow_h
+
+#include "winMS.h"
+#include "config.h"
+#include "global.h"
+
+HWND mswin_init_message_window();
+void mswin_message_window_size(HWND hWnd, LPSIZE sz);
+
+#endif /* MSWINMessageWindow_h */