docs/173664: csup(1) manpage refers to "runsocks", which was part of net/socks5, which doesn't exist now

[eadler at FreeBSD.org]

Synopsis: csup(1) manpage refers to "runsocks", which was part of net/socks5, which doesn't exist now

Responsible-Changed-From-To: freebsd-doc->eadler
Responsible-Changed-By: eadler
Responsible-Changed-When: Sat Feb 9 00:39:44 UTC 2013
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=173664