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/makemon.c

@@ -915,7 +915,7 @@ clone_mon(struct monst *mon,
            However, tamedog() will not re-tame a tame dog, so m2
            must be made non-tame to get initialized properly. */
         m2->mtame = 0;
-        if (tamedog(m2, (struct obj *) 0)) {
+        if (tamedog(m2, (struct obj *) 0, FALSE)) {
             assert(has_edog(m2) && has_edog(mon));
             *EDOG(m2) = *EDOG(mon);
         }