We should seriously consider just moving to github with CPython in the process already.
Agreed about moving to GitHub as primary and specifically using the org we have for this (https://github.com/jython). CPython's recent support of GH with core-workflow should be mature enough for us to jump on this workflow as well.
We should get 2.7.1 out (maybe recent Windows improvements from Stefan are sufficient? we do have a missing file in the latest trunk, so will need some confirmation). At this point, maybe the best thing to do is use a temporary repo while we move from Ant to a Gradle + Ant custom task build; then switch to fully being on https://github.com/jython/jython as the reference location. I believe the args for having stripped out all of the jars from source are compelling reasons to do this; 2.7.2 and Jython 3 will have enough breathing room for us to make this transition.