[3.12] gh-102304: Fix Py_INCREF() for limited C API 3.9 (GH-105550) #105551
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When Python is built in debug mode (Py_REF_DEBUG macro), Py_INCREF()
and Py_DECREF() of the limited C API 3.9 (and older) now call
Py_IncRef() and Py_DecRef(), since _Py_IncRef() and _Py_DecRef() were
added to Python 3.10.
(cherry picked from commit 7ba0fd9)
Co-authored-by: Victor Stinner vstinner@python.org