Fetch from my repository to simplify port

Instead of fetching from a repository that was created based on a version
that did not include the pre-processor enhancements applied to -CURRENT
and patching to include them, fetch from a repository that has a copy of
the latest sources.

This change allows to remove the large number of complex patch files from
the port and will simplify further updates.

It is planned to make the port fetch from an official FreeBSD repository
as soon as it is available with up-to-date sources from -CURRENT.

No port revision bump since this is only a change to the build process and
not the generated package.