[Python-3000] Support for PEP 3131

["Martin v. Löwis"]

> BTW, I submitted the normalization patch for 2.6, if you want to look
> at it.

Thanks. It might take some time until I get a chance (or somebody else
may respond quicker); the 2.6 release is still ahead, so there is still
plenty of time.

Regards,
Martin