Query processing changed to accomodate proper wildcard processing
  (see the new flowchart). Used one ugly goto, but cannot think
  about any workaround right now.

If a wildcard is encountered when getting answers (or resolving
  CNAME chain), the corresponding RRs are now copied into the
  response packet and saved to a list of copied RRs for further
  deallocation.

Removed ns_put_rrset(), as in case of answers we needed to perform
  the wildcard checks.

Fix: Freeing of the copied qname in ns_answer().