ports/178596: devel/ocaml-extlib: Update to version 1.5.4

[edwin at FreeBSD.org]

Synopsis: devel/ocaml-extlib: Update to version 1.5.4

Responsible-Changed-From-To: freebsd-ports-bugs->miwi
Responsible-Changed-By: edwin
Responsible-Changed-When: Mon May 13 18:12:35 UTC 2013
Responsible-Changed-Why: 
miwi@ wants this submitter's PRs (via the GNATS Auto Assign Tool)

http://www.freebsd.org/cgi/query-pr.cgi?pr=178596