Log Message:
Update nsd to 3.0.5:

NOTE: the configuration file format has changed. Don't update blindly.

Major changes:
- integrated AXFR/IXFR support for zone transfer. IXFR is not supported
  when acting as master.
- TSIG authentication support for queries, notifies and zone transfers.
- full NOTIFY support
- DNAME type is supported
- experimental support for NSEC3 and NSID, not enabled in pkgsrc
- various bug fixes.