send-pack: require --verbose to show update of tracking refs

This is really an uninteresting detail, and it just takes
attention away from the actual push updates and posssible
errors.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin-send-pack.c

@@ -195,6 +195,7 @@ static void update_tracking_ref(struct remote *remote, struct ref *ref)
 		return;
 
 	if (!remote_find_tracking(remote, &rs)) {
+		if (args.verbose)
 			fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
 		if (is_null_sha1(ref->peer_ref->new_sha1)) {
 			if (delete_ref(rs.dst, NULL))