We currently have no valid use case for having a `port` property
different from the directory name the port's residing in. We do have
issues when this is the case when referencing dependencies, so let's
make sure all ports have a sensible `port` property to begin with.
We may need entries with spaces in makeopts, installopts, and
configopts, and at that point we should also convert depends and
auth_opts to avoid confusion.
