note about #2279

Doc/whatsnew/2.7.rst

@@ -117,6 +117,9 @@ changes, sorted alphabetically by module name. Consult the
 :file:`Misc/NEWS` file in the source tree for a more complete list of
 changes, or look through the Subversion logs for all the details.
 
+* In Distutils, distutils.sdist.add_defaults now uses package_dir and data_files
+  to feed MANIFEST.
+
 * It is not mandatory anymore to store clear text passwords in the
   :file:`.pypirc` file when registering and uploading packages to PyPI. As long
   as the username is present in that file, the :mod:`distutils` package will