upgrade packs

[Samuel J. Greear]

> The source(s) for the client and build tools for freebsd-update are available.
>
> http://www.freebsd.org/cgi/cvsweb.cgi/projects/freebsd-update-server/
> http://www.freebsd.org/cgi/cvsweb.cgi/src/usr.sbin/freebsd-update/
>
> Sam
>

Sascha was kind enough to point out that Matthias has already ported
this and there has already been a thread regarding binary updates:

http://leaf.dragonflybsd.org/mailarchive/users/2007-12/msg00036.html

Sam