Bug#548913: udev Forces mdadm to Uninstall.

[Pat Suwalski]

Package: mdadm
Version: 3.0-2

dist-upgrading unstable to udev version 146-3 causes mdadm to uninstall,
since udev 'Break's mdadm <3.0-3, and the newest version is 3.0-2.

This needs to be resolved quickly, or there will be many more broken
computers. In my case, I didn't see mdadm was being removed with all of
the "no longer required" ia32 libs list taking up the whole screen.