no unbound methods in py3k

[Christian Heimes]

Thomas Heller wrote:
> Ok, so one has to write an extension to access or expose it.
> 
> Oh, wait - there's ctypes:

I wrote the type to help the Pyrex and Cython developers to port their 
software to 3.0. I planed to expose the type as 
__builtin__.instancemethod but forgot it. Maybe we can convince Barry 
together. He still considers my bug as a release blocker for 3.0.

Christian