Add ftp7.FreeBSD.org, ftp8.FreeBSD.org, and ftp9.FreeBSD.org to our
lovely list of FTP mirrors.

ftp7 is hosted by the U.S. Army Research Laboratory on an OC12.
ftp8 is hosted by Alternative-PC.
ftp9 is hosted by CERIAS at Purdue University on several T3s.

Deed done by: ps
Thanks to: Brian Poole <rajak@cerias.purdue.edu> for putting up a

		local mirror (to me :-).