Not that it would matter on a two-line patch, but I find it useful to
add myself to the "nosy" list without any comments as so as I find the
issue interesting even if I have nothing to contribute at the moment.
This way I am more likely to notice when someone posts a patch before
duplicating the effort.

> Concerning including the extern "C" in the PyAPI_* macros, I had the
> same idea and think that that it would unclutter code a bit.

This would be a bigger change and getting it right would require
expertise with non-standard declarations  (__declspec(..) etc) that I
don't have.   Ulrich, you seem to be a Windows expert, can you suggest
a patch?