As noted in the original post, this is a change which will be made once the 3.3 release is out the door. It's origin lies in the fact that one of the new pkgutil tests currently lives in test_runpy because test_runpy has much better infrastructure for that kind of thing.

While figuring out where to put some shared infrastructure for the runpy, pkgutil, import and importlib tests, I came to the conclusion that having support.py, script_helper.py and whatever we decide to call the new module all living in the main test directory makes the support modules unnecessarily hard to find, and merging them all into a single massive support.py module doesn't make sense either.

Chris has been working on the patches. We were going to try to get this refactoring done before the release, but enough other things have ended up coming up that Antoine and I decided it was better to wait.