Created originally on Bitbucket by yufeiz (Faye Zhao)
Was already merged in Bitbucket before import, marked as merged by the import user
Similar as tp_setattrp, expose different tp_getattro slots for different builtin types.
It seems the test "pypy/module/cpyext/test/test_typeobject.py::AppTestSlots::()::test_binaryfunc" was already failing when pulled from master.