ports/157584: Fix port: japanese/p5-Mail-SpamAssassin should use USERS

[crees at FreeBSD.org]

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

Responsible-Changed-From-To: perl->crees
Responsible-Changed-By: crees
Responsible-Changed-When: Sat Jul 2 08:35:24 UTC 2011
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=157584