All of the PyModule_AddIntMacro() changes have already been applied in https://github.com/python/cpython/commit/6782b14bcba612e4a39e41992c77306217b91e30.

The remaining parts are:

-    x = PyLong_FromLong((long)NSIG);
-    if (!x || PyDict_SetItemString(d, "NSIG", x) < 0)
+    if (PyModule_AddIntMacro(m, NSIG))
         goto finally;
-    Py_DECREF(x);

---

-     PyExc_IOError, NULL);
-    if (ItimerError != NULL)
-    PyDict_SetItemString(d, "ItimerError", ItimerError);
+                                     PyExc_IOError, NULL);
+    if (PyModule_AddObject(m, "ItimerError", ItimerError))
+        goto finally;