Created originally on Bitbucket by mattip
PyDict_Next by creating a
Unfortunately the test exposed another cpyext failure, creating a
PyGetSetDescrObject from a typdef's
GetSetProperty. After adding a way to pass the w_type into the appropriate
attach function, I got the desired outcome, but did not actually turn the fget,fset into c-function equivalents
GetSetProperty never worked in the first place, I would like to merge this branch as-is, it accomplishes the purpose it set out - to improve PyDict_Next.
If and when we get concrete complaints about
PyGetSetDescrObject crashing, we can open a new issue.