docs/172554: [handbook] [patch] Add CVSup to portsnap migration section

[beat at FreeBSD.org]

Synopsis: [handbook] [patch] Add CVSup to portsnap migration section

Responsible-Changed-From-To: freebsd-ports-bugs->freebsd-doc
Responsible-Changed-By: beat
Responsible-Changed-When: Wed Oct 10 14:34:45 UTC 2012
Responsible-Changed-Why: 
Fix category and assignment.

http://www.freebsd.org/cgi/query-pr.cgi?pr=172554