the former is still provided through nameser_compat.h while the
latter is not available on older NetBSDs
should fix build error seen in the 2.0.2 bulk build
changes:
* fix a bug when uncomplete aor is provided in registration.
* forget to allow record-routing for SUBSCRIBE and NOTIFY.
* new option to reload regularly ip for server without fixed ip.
* Send 403 Forbidden for wrong login. (instead of 404)