Add Py3k warnings to os.path.walk
diff --git a/Misc/NEWS b/Misc/NEWS
index 5c7d304..a4f886b 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -30,6 +30,8 @@
 
 - test.test_support.catch_warning() gained a 'record' argument.
 
+- os.path.walk is deprecated in favor of os.walk.
+
 Build
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