Bug#33787: dpkg: unnecessary warning on --purge

[jdg@maths.qmw.ac.uk (Julian Gilbey)]

Package: dpkg
Version: 1.4.0.33

When purging a package which has conffiles in a directory owned only
by the package, it issues a warning during the remove phase that the
directory is not empty.  The problem is probably in dpkg/remove.c,
remove_bulk(), which should check whether the reason for the inability
to remove the directory is due solely to the presence of conffiles.
It should also attempt to remove the directory again after purging
conffiles, which it does not currently do.

   Julian

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  Julian Gilbey, Dept of Maths, QMW, Univ. of London. J.D.Gilbey@qmw.ac.uk
             Debian GNU/Linux Developer.  jdg@debian.org
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