[MERGE] Move install_revision(s) onto the Repository object.

[Jelmer Vernooij]

Jelmer Vernooij has voted approve.
Status is now: Resubmit
Comment:
the tests were already part of the repository interface tests, so this 
method is already tested for all repository implementations.

what should I change exactly and resubmit?

For details, see: 
http://bundlebuggy.aaronbentley.com/project/bzr/request/%3C20080804032617.GA19075%40vernstok.nl%3E
Project: Bazaar