fixed reply_route -> failure_route

examples/exec_s5b.cfg

@@ -35,7 +35,7 @@ route{
 	# user found, forward to his current uri now; if any 
 	# forwarding error occurs (e.g., busy or cancelled recevied
 	# from downstream), proceed to reply_route[1]
-	t_on_negative("1");
+	t_on_failure("1");
 	if (!t_relay()) {
 		sl_reply_error();
 	};
@@ -67,7 +67,7 @@ route[1] {
 	break;
 }
 
-reply_route[1] {
+failure_route[1] {
 	# just call exec, that's it
    	exec_msg('
 		QUERY="select email_address from subscriber