A client for [CVS] in pure tcl. - [CMcC] 20041015

The intention is to embed this in other applications, rather than support it as a stand-alone application.  In particular, a [cvsvfs] will be written to provide a [virtual filesystem] which keeps itself in sync with a CVS repository.

At the moment, it only supports :pserver: read access, sufficient to '''checkout''' a module from a repository, and '''update''' it ... so it can be used to keep a directory hierarchy up-to-date with a cvs server.

The snapshot can be downloaded here: http://sharedtech.dyndns.org/~colin/tclcvs.tar.gz

'''Future Work''':

   1. write a [tclvfs] wrapper for tclcvs
   2. support '''commit''' and '''add'''
   3. documentation and tests
   4. :ext: server support.

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'''Note''': CVS is a horrible, horrible protocol.  The justification for implementing it is its omnipresence.  It should be possible, with this code, to implement self-updating packages.