Message 249139 - Python tracker

Note:
I'm including a tested (+fixed, now) copy of capsulethunk.h in my set of Python3 C extension porting helpers, http://py3c.readthedocs.org

Unfortunately the tests can't be added to CPython, because they need to run on Python 2.6 to be useful. That makes me think an external project might make a better home for this piece of code.
If you agree, I can take over maintainership of capsulethunk, and make py3c the canonical home for it.