docs/177215: [handbook] [patch] FreeBSD uses SHA512 and no more MD5 for encrypting passwords

[eadler at FreeBSD.org]

Synopsis: [handbook] [patch] FreeBSD uses SHA512 and no more MD5 for encrypting passwords

Responsible-Changed-From-To: freebsd-doc->eadler
Responsible-Changed-By: eadler
Responsible-Changed-When: Fri Mar 22 00:50:40 UTC 2013
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=177215