[cvsnt] Latest Updates

[Tony Hoyle]

CVSNT 2.0.13

There's a lot in this one so if you're paranoid it's best to wait a couple
of days.

* SSPI for Unix.  No encryption, client only and only NTLMv1 so it isn't
  a whole lot better than pserver (it's only a little bit more secure), but
  people seem to want it...

* DLL and COM plugin interface for commitinfo, loginfo, etc.  Difficult to 
  explain, but http://www.cvsnt.org/wiki/CvsChapter193a has some details.
  There's a c# COM server in the contrib_nt directory in the source.

* Upgrade to zlib 1.2.1

* 'edit -z' command to compress the files in the CVS/Base directory
  (recommended, as it stops you accidentally editing them)

* On Win2k and above, use the negotiation system to use Kerberos when
  available (when logged into Active Directory)

* Commit -D to force the client to assume all files are modified, thus
  forcing it to send them to the server for diffing.  It's rather slow
  on a large repository so only use in emergencies.

* Upgrade to Innosetup 4