* scd/app.c (lock_app): Rename from lock_reader and use internal field
of APP.
(unlock_app): Likewise.
(app_dump_state): Use APP.
(application_notify_card_reset): Remove.
(check_conflict): Change API for APP, instead of SLOT.
(check_application_conflict): Likewise.
(release_application_internal): New.
(app_reset): New.
(app_new_register): New.
(select_application): Change API for APP, instead of SLOT.
(deallocate_app, release_application): Modify for manage link.
(report_change): New.
(scd_update_reader_status_file): Moved from command.c and
use APP list, instead of VREADER.
(initialize_module_command): Moved from command.c.
* scd/command.c (TEST_CARD_REMOVAL): Remove.
(IS_LOCKED): Simplify.
(vreader_table): Remove.
(vreader_slot, update_card_removed): Remove.
(do_reset): Call app_reset.
(get_current_reader): Remove.
(open_card): Add SCAN arg.
(cmd_serialno): No retry, since retry is done in lower layer in apdu.c.
No do_reset, since it is done in lower layer.
Add clearing card_removed flag.
(cmd_disconnect): Call apdu_disconnect.
(send_client_notifications): Modify for APP.
(update_reader_status_file): Remove.