Freecode is now serving static content. Update handbook to reflect new
and active software sources.

https://lists.freebsd.org/pipermail/freebsd-doc/2014-November/024532.html

Differential Revision:	https://reviews.freebsd.org/D1131
Submitted by:	ssanty1969@gmail.com via mail to doc@
Reviewed by:	wblock,remko (mentors)
Approved by:	remko (mentor)