ports/157664: Fix port: mail/p5-Mail-SpamAssassin should use USERS

[edwin at FreeBSD.org]

Synopsis: Fix port: mail/p5-Mail-SpamAssassin should use USERS

Responsible-Changed-From-To: freebsd-ports-bugs->perl
Responsible-Changed-By: edwin
Responsible-Changed-When: Mon Jun 6 17:40:14 UTC 2011
Responsible-Changed-Why: 
perl@ wants this port PRs (via the GNATS Auto Assign Tool)

http://www.freebsd.org/cgi/query-pr.cgi?pr=157664