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/potion.c

@@ -2789,7 +2789,7 @@ djinni_from_bottle(struct obj *obj)
         break;
     case 1:
         verbalize("Thank you for freeing me!");
-        (void) tamedog(mtmp, (struct obj *) 0);
+        (void) tamedog(mtmp, (struct obj *) 0, FALSE);
         break;
     case 2:
         verbalize("You freed me!");