[Pyrex] C-API implementation in Pyrex 0.9.6

[Greg Ewing]

Stefan Behnel wrote:
> When I add C methods to these, I get errors that they are "not previously
> declared in definition part of extension type".

Adding C methods changes the layout of the type's vtable,
which has the same implications as changing the struct
layout. So importers need to know about all the C methods
that a type has.

--
Greg