apt-get install should recover gracefully upon power failure

[Dan Kegel]

A wine user reported that a power failure while installing wine corrupted his system, and that recovering
from the power failure was possible but took him too long to figure out. It turned out he was
using apt-get to install wine on ubuntu.

Short term, maybe a wiki page or a reply to this bug documenting how to try to recover from this situation would do.

Long term, ubuntu should consider sprinking magic fairy dust on apt-get to turn it into a fully ACID
power-fail-resilient package manager (like http://nixos.org/nix/ claims to be).