[MERGE] Support for the decorate argument also in CommandRegistry.register_lazy

[Bundle Buggy]

Bundle Buggy has detected this merge request.

For details, see: 
http://bundlebuggy.aaronbentley.com/project/bzr/request/%3C5288a560812190245g72cdc015xbfb78e7a66e4cea0%40mail.gmail.com%3E
Project: Bazaar