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/bones.c

@@ -581,11 +581,9 @@ getbones()
 			for(mtmp = fmon; mtmp; mtmp = mtmp->nmon) {
 			    if (has_mname(mtmp)) sanitize_name(MNAME(mtmp));
 			    if (mtmp->mhpmax == DEFUNCT_MONSTER) {
-#if defined(DEBUG)
 				if (wizard)
-				    pline("Removing defunct monster %s from bones.",
+				    debugpline("Removing defunct monster %s from bones.",
 					mtmp->data->mname);
-#endif
 				mongone(mtmp);
 			    } else
 				/* to correctly reset named artifacts on the level */