PortInfo lookup performance patch

[Joshua Root]

Joshua Root wrote:
> I think the patch in <http://trac.macports.org/ticket/18259> is just
> about ready to go in. Does anyone have any suggestions or comments
> before it does? It won't be set in stone until 1.8 is released, but it
> would still be good to catch any issues sooner rather than later.

Well, I got no comments, so the code must be perfect. ;-)

Committed: <http://trac.macports.org/changeset/47110>

- Josh