[Python-Dev] Finally fix installer to add Python to %PATH% on Windows

["Martin v. Löwis"]

> I'd like to see this in 3.2 release, of course.

As Brian already asserted: that's not feasible. I still haven't
managed to test your installer, and may not be able to for the
next few weeks. It's also against the policy for release candidates
to add such a change at this point. I believe the change, if
implemented, needs to be optional (which I believe your change is not).

Regards,
Martin