agent: Silence --debug IPC output for connections from self.
* agent/command.c (server_local_s): Add fields 'greeting_seen' and 'connect_from_self'. (io_monitor): Do not log connections from self. (start_command_handler): Set flag 'connect_from_self'. * agent/gpg-agent.c (check_own_socket_thread): Disable logging. (do_start_connection_thread): Do not log conection start and termination if IPC debugging is enabled.
- Signed-off-by: Werner Koch <wk@gnupg.org>