* dbusbind.c (dbus_fd_cb, xd_get_dispatch_status)

* dbusbind.c (dbus_fd_cb, xd_get_dispatch_status)
(xd_pending_messages): Functions removed.
(xd_read_queued_messages): Add parameters fd, *data, for_read in
order to be compatible with add_read_fd.  Determine bus from data,
and call xd_read_message just for this bus.
(xd_add_watch): Use xd_read_queued_messages as callback function.
Add data.

* lisp.h (xd_pending_messages, xd_read_queued_messages): Remove.