* dbusbind.c (QCdbus_request_name_allow_replacement): New symbol;

* dbusbind.c (QCdbus_request_name_allow_replacement): New symbol;
used by Fdbus_register_service.
(QCdbus_request_name_replace_existing): Likewise.
(QCdbus_request_name_do_not_queue): Likewise.
(QCdbus_request_name_reply_primary_owner): Likewise.
(QCdbus_request_name_reply_in_queue): Likewise.
(QCdbus_request_name_reply_exists): Likewise.
(QCdbus_request_name_reply_already_owner): Likewise.
(Fdbus_register_service): New function.
(Fdbus_register_method): Use Fdbus_register_service to do the name
registration.
(syms_of_dbusbind): Add symbols dbus-register-service,
:allow-replacement, :replace-existing, :do-not-queue,
:primary-owner, :existing, :in-queue and :already-owner.