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/restore.c

@@ -1153,9 +1153,7 @@ register int fd;
 		++msgcount;
 	}
 	if (msgcount) putmsghistory((char *)0, TRUE);
-#ifdef DEBUG_MSGCOUNT
-	pline("Read %d messages from savefile.", msgcount);
-#endif
+	debugpline("Read %d messages from savefile.", msgcount);
 }
 
 /* Clear all structures for object and monster ID mapping. */