update-manager merge with debian/improvements

Registered by Robbie Williamson

There was a summer of code project to modernize update-manager. This is good stuff and we should merge it back from Debian. This requires some work to move the release upgrader and the auto-upgrader tester into their own bzr repositories (but that is a good idea anyway). It also means that we need to check if the meta-release feature is implmeneted there. But it should be all nice and modular now (and trivial to extend).

On the way we should fix bug #450914 (improper auto-mark)

Blueprint information

Status:
Not started
Approver:
Colin Watson
Priority:
Undefined
Drafter:
Michael Vogt
Direction:
Needs approval
Assignee:
Canonical Foundations Team
Definition:
Discussion
Series goal:
None
Implementation:
Deferred
Milestone target:
None

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