ports/171201: Update security/pam_google_authenticator to 2012-08-31 snapshot

[edwin at FreeBSD.org]

Synopsis: Update security/pam_google_authenticator to 2012-08-31 snapshot

Responsible-Changed-From-To: freebsd-ports-bugs->pgollucci
Responsible-Changed-By: edwin
Responsible-Changed-When: Fri Aug 31 10:50:42 UTC 2012
Responsible-Changed-Why: 
pgollucci@ wants this port PRs (via the GNATS Auto Assign Tool)

http://www.freebsd.org/cgi/query-pr.cgi?pr=171201