NSD 3.1.1 released

Hi all,

Today, NSD 3.1.1 has been released. It is mainly a bugfix release. As
usual, you can download it at nlnetlabs.nl:
  http://www.nlnetlabs.nl/downloads/nsd/nsd-3.1.1.tar.gz

Its SHA1 checksum is: 5d175e2514294dba1336ab0e5421f68076af278f

Features
    * The number of maximum interfaces allowed is configurable with
- --with-max_interfaces.

Bugfixes
    * Try to avoid race conditions when NSD reloads and nsdc signals
NSD: Update the pidfile before exiting the old server.
    * Fixed memory leak when NSEC3 enabled but not needed.
    * Added region destroys when erroring during zone transfers.
    * Bugfix #191: nsd-checkconf allowed (max_interfaces-1) interfaces.

- - Matthijs