[Python-3000] PyInt_ to PyLong_ rename

["Martin v. Löwis"]

>> Sure. However, you could also use _testcapi.PY_SSIZE_T_MAX, or
>> ctypes.sizeof(ctypes.py_object).
> 
> Much less intuitive though.

Actually, I find the ctypes version a more direct answer to the
question "what is the address space?".

>> I'd be in favor of the latter. I never meant the PyInt_CheckExact hack
>> to persist into the release.
> 
> OK. What's needed?

The remaining occurrences of PyInt_CheckExact must be replaced with
PyLong_Check, and the subsequent PyLong_AsLong calls must check for
overflow. There are 22 uses still left. The ones in ceval.c are
quite tricky: it's not clear that the speed-up they originally meant
to provide is still present. The options would be to either continue
special-casing small integers, or to remove the check altogether,
trusting that the binary operator is fast enough (which may actually
involve fewer function calls than the "inline" version).

Regards,
Martin