Apply paxed's DEBUG patch to remove DEBUG/D_DEBUG.

Move debugging output into couple preprocessor defines, which
    are no-op without DEBUG.  To show debugging output from a
    certain source files, use sysconf:

    DEBUGFILES=dungeon.c questpgr.c

    Also fix couple debug lines which did not compile.

This also includes fixes due to Derek Ray to depugpline to work better
on other platforms.

src/hack.c

@@ -767,7 +767,7 @@ int mode;
 static boolean trav_debug = FALSE;
 
 int
-wiz_debug_cmd() /* in this case, toggle display of travel debug info */
+wiz_debug_cmd_traveldisplay() /* in this case, toggle display of travel debug info */
 {
 	trav_debug = !trav_debug;
 	return 0;