there's probably a better way to do this (or a better reason), but
LONG_MIN and LONG_MAX end up as the wrong constant types when compiling
python2.5.2 under wine (don't ask...)

PyObject *
PyInt_FromSsize_t(Py_ssize_t ival)
{
    if ((long)ival >= (long)LONG_MIN && (long)ival <= (long)LONG_MAX)
    {
        return PyInt_FromLong((long)ival);
    }
    return _PyLong_FromSsize_t(ival);
}