ports/168100: Update port: www/py-selenium Upgrade to version 2.21.3

[edwin at FreeBSD.org]

Synopsis: Update port: www/py-selenium Upgrade to version 2.21.3

Responsible-Changed-From-To: freebsd-ports-bugs->freebsd-python
Responsible-Changed-By: edwin
Responsible-Changed-When: Fri May 18 09:30:38 UTC 2012
Responsible-Changed-Why: 
freebsd-python@ wants this port PRs (via the GNATS Auto Assign Tool)

http://www.freebsd.org/cgi/query-pr.cgi?pr=168100