o Added "sane" registration of it during initialization of Five, instead
  of registering it via import side effects.

Clearing frees resources, closing also sends out the end-request event. Clones
of the current request need to be cleared, only the actual current request
needs to be closed. Fixes LP #414757.

- LP #418454: FTP server did not work with Python 2.6.X

the tests pass fine without this and it is causing test interdependency issues when run along with the Plone products and ExtendedPathIndex tests