(class connection): New attribute config.
(make_connection): New argument config. Enable pty support.
(make_lshd_connection_config): New function.
(OPT_HELPER_FD): New constant.
(main_options): New options struct, and new option --helper-fd.
(main_argp_parser): New function.
(main_argp): Include new options.
(main): Use make_lshd_connection_config, and pass configuration to
make_connection.

Rev: src/lshd-connection.c:1.1.2.19