Add optional 'onerror' argument to os.walk(), to control error
handling.
diff --git a/Misc/NEWS b/Misc/NEWS
index d8a95a2..26b543b 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -38,6 +38,9 @@
 Library
 -------
 
+- Added optional 'onerror' argument to os.walk(), to control error
+  handling.
+
 - inspect.is{method|data}descriptor was added, to allow pydoc display
   __doc__ of data descriptors.