[cvsnt] New CVS Notification Program

[Terris Linenbach]

It's been a few years since I last updated the CVS notification programs
significantly.  I created a separate installer, replaced the various scripts
with one program, fixed the taginfo performance problem, added IRC support,
and finally added the feature to combine multiple operations (commit, etc.)
by the same user into a single message.  More to come.

http://devguy.com/cvsnotify