Issue #3080: Add PyModule_GetNameObject()

repr(module) uses %R to format module name and filenames, instead of '%s' and
'%U', so surrogates from undecodable bytes in a filename (PEP 383) are escaped.

Include/moduleobject.h

@@ -16,6 +16,7 @@ PyAPI_FUNC(PyObject *) PyModule_New(
     const char *name            /* UTF-8 encoded string */
     );
 PyAPI_FUNC(PyObject *) PyModule_GetDict(PyObject *);
+PyAPI_FUNC(PyObject *) PyModule_GetNameObject(PyObject *);
 PyAPI_FUNC(const char *) PyModule_GetName(PyObject *);
 PyAPI_FUNC(const char *) PyModule_GetFilename(PyObject *);
 PyAPI_FUNC(PyObject *) PyModule_GetFilenameObject(PyObject *);