tomcat 5.5 security fix

[Roger Marquis]

> It's been a while since vulnerabilities have been discovered in tomcat
> 5.5.28, which is the version in ports.
> 5.5.30 has been out for a couple of weeks.

For most sites this particular security advisory can be ignored.  If,
like us, you get tired of portaudit false positives this patch, submitted
earlier in the month, worked for us:

   http://www.freebsd.org/cgi/query-pr.cgi?pr=148611

Roger Marquis