[Merge] lp:~mvo/ubuntu-release-upgrader/partial-upgrade-cleanup into lp:ubuntu-release-upgrader

[Brian Murray]

Review: Approve

This looks good to me, but I reference bug 1243619 if it is in fact fixed by the readline changes.
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https://code.launchpad.net/~mvo/ubuntu-release-upgrader/partial-upgrade-cleanup/+merge/214685
Your team Ubuntu Core Development Team is requested to review the proposed merge of lp:~mvo/ubuntu-release-upgrader/partial-upgrade-cleanup into lp:ubuntu-release-upgrader.