* agent/gpg-agent.c (check_own_socket_running): Remove.
(socket_takeover_detected): New.
(check_own_socket): Remove.
(handle_tick): Don't call check_own_socket any more.
(handle_connections): Start off the check_own_socket_thread.
Check socket_takeover_detected to handle the event.
(do_check_own_socket): New, factoring out the task.
(check_own_socket_thread): Loop with the interval.