As far as I can tell PyEval_GetOwner was removed in 1997 (when it was
called something else!). I can't imagine removing the prototype is
going to hurt, but put it back if *you* can.
diff --git a/Include/ceval.h b/Include/ceval.h
index 8d0ca9e..411cf3e 100644
--- a/Include/ceval.h
+++ b/Include/ceval.h
@@ -30,7 +30,6 @@
PyAPI_FUNC(PyObject *) PyEval_GetBuiltins(void);
PyAPI_FUNC(PyObject *) PyEval_GetGlobals(void);
PyAPI_FUNC(PyObject *) PyEval_GetLocals(void);
-PyAPI_FUNC(PyObject *) PyEval_GetOwner(void);
PyAPI_FUNC(struct _frame *) PyEval_GetFrame(void);
PyAPI_FUNC(int) PyEval_GetRestricted(void);