Python 3.11 support

Py_TYPE() changed to a inline static function, replace it with
Py_SET_TYPE(). Include a backwards compatibility macro.

See: bpo-39573

lib/ipp/ippmodule.c

@@ -27,6 +27,12 @@
 #include <arpa/inet.h>
 #include "pv.h"
 
+#if PY_VERSION_HEX < 0x030900A4 && !defined(Py_SET_TYPE)
+static inline void _Py_SET_TYPE(PyObject *ob, PyTypeObject *type)
+{ ob->ob_type = type; }
+#define Py_SET_TYPE(ob, type) _Py_SET_TYPE((PyObject*)(ob), type)
+#endif
+
 #define set_read_only(attrib) \
 static int set_##attrib( \
       IPprefixObject *self, PyObject *value, void *closure) { \
@@ -931,7 +937,7 @@ PyMODINIT_FUNC initipp(void)  {
 
    if (PyType_Ready(&IPprefixType) < 0)
       RETURN;
-   Py_TYPE(&IPprefixType) = &PyType_Type;
+   Py_SET_TYPE(&IPprefixType, &PyType_Type);
 
 #if PYTHON3
    m = PyModule_Create(&ipp_module);