Two OpenWrt updates

In the snapshot releases, there is now an option to have the upgrade process provide a file with the list of manually installed packages for easy re-installation! There are a bunch of obvious things that could go wrong with having the upgrade process automatically download and reinstall the packages, so handling all the corner cases there would be a lot of work.

Doing something smarter about config files where the defaults have changed would be a desirable feature, although I don't think that automatically accepting the new defaults is always the right answer.

I believe that patches would be welcome in support of either of these ideas.