[Merge] lp:~vorlon/update-notifier/lp.876298 into lp:update-notifier

[Steve Langasek]

This implementation has a problem.  The file in /usr/share/package-data-downloads will always have the mtime that was set when the package was created.  This means that if a user installs an out-of-date version of the package which successfully downloads the data it requests, then runs apt-get update and installs the current version, the hook will not trigger because the stamp file's date will still be newer than the mtime on the hook.

Still thinking how to fix this.
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https://code.launchpad.net/~vorlon/update-notifier/lp.876298/+merge/98487
Your team Ubuntu Core Development Team is requested to review the proposed merge of lp:~vorlon/update-notifier/lp.876298 into lp:update-notifier.