Issue #13560: Add PyUnicode_EncodeLocale()

 * Use PyUnicode_EncodeLocale() in time.strftime() if wcsftime() is not
   available
 * Document my last changes in Misc/NEWS
diff --git a/Include/unicodeobject.h b/Include/unicodeobject.h
index 5f073e0..8a23c7d 100644
--- a/Include/unicodeobject.h
+++ b/Include/unicodeobject.h
@@ -1603,7 +1603,7 @@
    be decoded as a surrogate character and *surrogateescape* is not equal to
    zero, the byte sequence is escaped using the 'surrogateescape' error handler
    instead of being decoded. *str* must end with a null character but cannot
-   contain embedded null character. */
+   contain embedded null characters. */
 
 PyAPI_FUNC(PyObject*) PyUnicode_DecodeLocaleAndSize(
     const char *str,
@@ -1617,6 +1617,16 @@
     const char *str,
     int surrogateescape);
 
+/* Encode a Unicode object to the current locale encoding. The encoder is
+   strict is *surrogateescape* is equal to zero, otherwise the
+   "surrogateescape" error handler is used. Return a bytes object. The string
+   cannot contain embedded null characters.. */
+
+PyAPI_FUNC(PyObject*) PyUnicode_EncodeLocale(
+    PyObject *unicode,
+    int surrogateescape
+    );
+
 /* --- File system encoding ---------------------------------------------- */
 
 /* ParseTuple converter: encode str objects to bytes using