[rbldnsd] rbldnsd-0.89p2 (prerelease)

[Michael Tokarev]

Yet another prerelease, preparations for 0.90.
End of "feature" things (switching to BIND behaviour was
required anyway), next is code reviews all the places.

Highlights:

o All dataset types now behave correctly (i.e. no NXDOMAIN
   if some subdomain of a query is listed, be it IP-based or
   DN-based dataset).

o handle DNs with zero bytes (say this is used somewhere)
   correctly (bugfix - don't use strcmp() et all against DNs)

o some little logging improvements (buffered/unbuffered
   logging, ability to log to a FIFO)

o quick/quiet startup (load zones in background, do not
   abort if first load fails)

Except of incorrect handling of DNs with zero bytes, no
bug was found/fixed in new code (but added many comments),
but even more new code was added.  All this needs a good
review, finally.

http://www.corpit.ru/mjt/rbldnsd/NEWS.

Almost here...

/mjt