Bug#245164: Should be able to get high debconf priority even if there were problems in the installation

[Christian Perrier <bubulle@debian.org>]

Quoting Kenshi Muto (kmuto@debian.org):

> (This isn't related with Bug#228839. So we need to split again if we
> apply this patch.)

Hmm, I'm not sure this isn't related to 228839. While worded
differently, the idea is the same-->the debconf priority after 2nd
stage should be the same then the original priority, whatever it is.

I mentioned this as "should re-ask the debconf priority question after
base-config" because at this time, I saw the problem this way.

But, indeed, we should, at the very beginning of 1st stage, keep the
debconf/cdebconf priority and just reset it at the end of the 2nd
stage (that is, base-config).

This was the "philosophy" of 228839, at the least.....and as far as I
have understood, your concern is similar.