NSD 4.4.0

This release changes the memory allocation for outgoing zonetransfers,
and this reduces the memory footprint. The defaults for the amounts are
the same as before, but there are config options to configure the memory
usage. There are also bug fixes.

4.4.0

FEATURES:

• Merge #193: Lower memory usage of the XFRD process by default.
  Instead of preallocating all elements, they are allocated when used.
  There are options for managing the memory usage, defaults are the
  same as before. xfrd-tcp-max sets the number of sockets for tcp
  connections that xfrd can make to download zone contents. And
  xfrd-tcp-pipeline the number of simultaneous transfers over the
  same connection.

BUG FIXES:

• Fix #200: nsd-checkzone succeeds even with incorrect serial in SOA
  record.
• Merge #204 from jonathangray: correct some spelling mistakes.
• Fix to change file mode before changing file owner for the
  nsd-control unix socket file.
• Fix to document nsd-checkzone -p in the man page for nsd-checkzone.
• Fix #206: build with --without-ssl fails.
• Merge #207 Sync nsd-control-setup with unbound-control-setup to
  generate certificates with SANs.
• Fix unit tests for nds-control-setup exit code and the
  xfrd-tcp-max default.