finally finished but not eating

Finally apply the patch sent by <Someone> in 11/2003 for slashem-Bugs-799278,
updated to match the current code and handle additional cases.  The fix
is brute force: always ensure nomovemsg is set when nomul is called with
a negative value.  I also scanned the code for places manually setting
multi negative, they all set nomovemsg.  It would be nice to have a function
that did the right thing, but there are several special cases and I was
not feeling creative.

src/timeout.c

@@ -44,6 +44,7 @@ stoned_dialogue()
 	case 3:		/* limbs turned to stone */
 		stop_occupation();
 		nomul(-3);	/* can't move anymore */
+		nomovemsg = 0;
 		break;
 	default:
 		break;
@@ -1239,6 +1240,7 @@ do_storms()
 	if(!u.uinvulnerable) {
 	    stop_occupation();
 	    nomul(-3);
+	    nomovemsg = 0;
 	}
     } else
 	You_hear("a rumbling noise.");