bpo-39573: Use Py_TYPE() macro in Python and Include directories (GH-18391)

Replace direct access to PyObject.ob_type with Py_TYPE().

Python/codecs.c

@@ -658,7 +658,7 @@ static void wrong_exception_type(PyObject *exc)
 {
     PyErr_Format(PyExc_TypeError,
                  "don't know how to handle %.200s in error callback",
-                 exc->ob_type->tp_name);
+                 Py_TYPE(exc)->tp_name);
 }
 
 PyObject *PyCodec_StrictErrors(PyObject *exc)