r4018: * move claim_connection from the netbios session request

r4018: * move claim_connection from the netbios session request
  reply code to the negprot reply code to cope with
  client connections on port 445.  Fixes the spurious
  "register_message_flags: tdb fetch failed" errors.

* don't run the backgroup LPQ daemon when we are running
  in interactive mode.
(This used to be commit 88747a7da351261185222e78e9c8d470ff53a246)