* README: Explain new service to store passwords in the LSA registry
area.
* bsd_helper.cc (get_token_info): Make externally available.
* bsd_helper.h (get_token_info): Declare.
* client.cc (client_request::handle_request): Add case for
CYGSERVER_REQUEST_SETPWD request.
* setpwd.cc: New file implementing the CYGSERVER_REQUEST_SETPWD
request.