Changes to the listserver package between 0.5 and 0.5a

Listserv.exe is now available, to deal with subscribe/unsub
requests, sending files and information, etc.

Digest.exe will now take header lines from the start of FAQ files
and digest trivia files.  This means that existing faq files will
need to be changed to start with Subject: and Newsgroups: lines,
and existing trivia files may need a blank line at the start.

Alias.exe and Reply.exe have had some minor internal changes.

The documentation has been rewritten from scratch.  I don't say
it's _good_, but I think it's better.

A sample installation is now included.

Tim Illingworth
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