[Import-SIG] PEP 420: Implicit Namespace Packages

[martin at v.loewis.de]

> I can go either way on this, but would lean toward __file__ not being
> set. Brett: what's your opinion?

I'd like to recall that we were explicitly discussion this question at
PyCon, and (IIRC) I proposed that it be None, and Guido pronounced that
it shall be the path to the first portion. So if you now want to change it,
you should check with him again.

Regards,
Martin