"password" and "keyboard-interactive".
(lsh_transport_packet_handler): Try password authentication if supported.
(try_password_auth): New function.
(try_keyboard_interactive_auth): New function.
(format_userauth_info_response): New function.
(send_userauth_info_response): New function.
(make_lsh_transport_config): Added support for
diffie_hellman_group1_sha1.
(start_service): Send hello message.

Rev: src/lsh-transport.c:1.4