[MERGE] Use a new "authors" revision property to allow multiple authors

[Jelmer Vernooij]

Jelmer Vernooij has voted approve.
Status is now: Approved


For details, see: 
http://bundlebuggy.aaronbentley.com/project/bzr/request/%3C1235999150.10731.0.camel%40flash%3E
Project: Bazaar