/mandos/trunk

Restore some poor D-Bus methods who got a bit hastily deleted.  Enable
writing to the "last_checked_ok" property.

* mandos (ClientDBus.CheckedOK, ClientDBus.Enable,
          ClientDBus.StartChecker, ClientDBus.Disable,
          ClientDBus.StopChecker): Restored.
  (ClientDBus.last_checked_ok_dbus_property): Make writing to this
                                              property do
                                              "self.checked_ok()".