ports/187289: benchmarks/postal: Update to version 0.73

[edwin at FreeBSD.org]

Synopsis: benchmarks/postal: Update to version 0.73

Responsible-Changed-From-To: freebsd-ports-bugs->miwi
Responsible-Changed-By: edwin
Responsible-Changed-When: Wed Mar 5 18:10:08 UTC 2014
Responsible-Changed-Why: 
miwi@ wants this submitter's PRs (via the GNATS Auto Assign Tool)

http://www.freebsd.org/cgi/query-pr.cgi?pr=187289