ports/168989: [www/squid31] update to 3.1.20

[sylvio at FreeBSD.org]

Synopsis: [www/squid31] update to 3.1.20

Responsible-Changed-From-To: freebsd-ports-bugs->sylvio
Responsible-Changed-By: sylvio
Responsible-Changed-When: Tue Jun 12 23:27:51 UTC 2012
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=168989