ports/186037: Update www/serf to version 1.3.3

[pfg at FreeBSD.org]

Old Synopsis: Update www/werf to version 1.3.3
New Synopsis: Update www/serf to version 1.3.3

Responsible-Changed-From-To: freebsd-ports-bugs->apache
Responsible-Changed-By: pfg
Responsible-Changed-When: Thu Jan 23 15:24:49 UTC 2014
Responsible-Changed-Why: 
Fix typo and assign manually to maintainer.

http://www.freebsd.org/cgi/query-pr.cgi?pr=186037