[V3dot10] [Q] About updates, take 3

[Ralph Johnson]

I tried the update from a 3.9 image with very little extra in it, and
it worked.  I liked the look of the background.  Calm, yet
distinctive.

I wonder, though, whether it is a good idea to have updates that
delete things?  We don't have a check for whether there are any users
of those things.  I'd be a lot happier to delete things from someone
else's image if we first checked to make sure that they were not used.
 I suppose that is why we tell them to save the image first.

-Ralph