Bug#32501: dpkg barfs on rm'ing directories which aren't empty
Upon trying to delete a non-empty directory which dpkg presumes
to be empty (such as /etc/X11/xdm) after it has deleted any files
in it known to dpkg (which are not encessarily ALL files, just
the ones from debian-packages) it segfaults. This does happen
when it tries to install/upgrade a package.
"...one of the main causes of the fall of the Roman Empire was that, lacking
zero, they had no way to indicate successful termination of their C programs."
-- Robert Firth