detach flag.
(make_options): Deleted handler argrment.
(add_action): Changed argument type to client_connection_action.
(make_client_session): Deleted handler argument in call to
make_client_session_channel.
(client_shell_session): Changed return type to
client_connection_action. Use make_open_session_action.
(client_subsystem_session): Likewise.
(client_command_session): Likewise.
(main_argp_parser): Changeed handling of -B, just set detach flag.
(class lsh_default_handler): Deleted class.
(do_lsh_default_handler): Deleted function.
(make_lsh_default_handler): Deleted function.
(main): Actions are now handled using the client_connection_action
class, not as commands. Handle detach (-B flag) here.

Rev: src/lsh.c:1.219