- Set defaults to yes for a number of options to increase speed and

- Set defaults to yes for a number of options to increase speed and
  resilience of the server.  The so-reuseport, harden-below-nxdomain,
  and minimal-responses options are enabled by default.  They used
  to be disabled by default, waiting to make sure they worked.  They
  are enabled by default now, and can be disabled explicitly by
  setting them to "no" in the unbound.conf config file.  The reuseport
  and minimal options increases speed of the server, and should be
  otherwise harmless.  The harden-below-nxdomain option works well
  together with the recently default enabled qname minimisation, this
  causes more fetches to use information from the cache.

git-svn-id: file:///svn/unbound/trunk@4871 be551aaa-1e26-0410-a405-d3ace91eadb9