Depending upon your configuration, you may also need to preserve additional
directories, including a custom upload directory ($wgUploadDirectory),
-deleted file archives, and any custom skins. If you're using very old exten-
-sions that add files to the "includes" directory or other directories, be sure
-to back those up as well.
+deleted file archives, and any custom skins.
=== Perform the database upgrade ===