[MERGE][bug 252908] Sensible default for rich root repositories in upgrade

[Ian Clatworthy]

Ian Clatworthy has voted approve.
Status is now: Approved


For details, see: 
http://bundlebuggy.aaronbentley.com/project/bzr/request/%3C49C4461F.4000407%40vernstok.nl%3E
Project: Bazaar