Comment 1 for bug 695033

As an alternative, consider signing the last-translator; that will let
you detect updated translations that have not had the translator
updated. A simple few-character hash (e.g. the first 16 bits of
md5(translation).update(translator)) would be plenty sensitive, and
easy for tools that want to support last-translator externally.

That way the export process will be identical, so that folk using
external tools on bzr branchs and then uploading the results via a
reviewer will still be served better than they are today.