ucspi-tls for mailfront-0.96

I've finally found some time to forward-port UCSPI-TLS to
mailfront-0.96.  The changes are quite minimal.  You can find the
latest version here:

    http://www.suspectclass.com/~sgifford/ucspi-tls/mailfront-0.96-ucspitls-0.1.patch
    http://www.suspectclass.com/~sgifford/ucspi-tls/mailfront-0.96-ucspitls-0.1.readme

The patch enhances mailfront's SMTP, POP, and IMAP with support for
UCSPI-TLS:

    http://www.suspectclass.com/~sgifford/ucspi-tls/ucspi-tls.txt

The changes cause the frontends to recognize a request to begin TLS
encryption and pass the request along to a parent server.  The actual
SSL implementation is in a tcpserver-style server, and can run all
client-directed encryption operations in a chroot jail with reduced
privileges, for much increased security.  This is currently
implemented as a patch:

    http://www.suspectclass.com/~sgifford/ucspi-tls/

to ucspi-ssl:

    http://www.superscript.com/ucspi-ssl/intro.html

I've run a previous version of this software for about 8 months on the
machine of a consulting client, and it's worked quite well.  Please
send along any questions, comments, or bug reports to me, or the
appropriate mailing list.

Thanks,

---ScottG.