Another tamedog message

Give a different message when a peaceful creature was tamed.
Allow suppressing this and the previous message, when the caller
handles messaging.

src/dothrow.c

@@ -2220,7 +2220,7 @@ thitmonst(
 
     } else if (befriend_with_obj(mon->data, obj)
                || (mon->mtame && dogfood(mon, obj) <= ACCFOOD)) {
-        if (tamedog(mon, obj)) {
+        if (tamedog(mon, obj, TRUE)) {
             return 1; /* obj is gone */
         } else {
             tmiss(obj, mon, FALSE);