* scd/app.c (struct mrsw_lock): Add notify_cond member.
(notify_cond): Remove.
(card_list_r_lock, card_list_r_unlock): Rename.
(card_list_w_lock, card_list_w_unlock): Rename.
(card_list_signal, card_list_wait): New, fixing thinko about
notify/wakeup with MRSW lock.
(app_send_devinfo): Support looping.
(select_application): Notify app_send_devinfo thread for newly
detected device.
(initialize_module_command): Initialize notify_cond member.
(app_wait): Remove.
* scd/command.c (cmd_devinfo): Use new API of app_send_devinfo.
* scd/scdaemon.h (app_wait): Remove.