Bug#182368: apt: user often sees spurious "not empty so not removed" on --purge

[Dan Jacobson <jidanni@dman.ddts.net>]

Package: apt
Version: 0.5.4
Severity: wishlist
File: /usr/bin/apt-get

Please consider the user's impression upon purging many packages,
e.g.,

    # apt-get --purge remove dhcp-client
    Reading Package Lists... Done
    Building Dependency Tree... Done
    The following packages will be REMOVED:
      dhcp-client* 
    0 packages upgraded, 0 newly installed, 1 to remove and 216  not upgraded.
    Need to get 0B of archives. After unpacking 348kB will be freed.
    Do you want to continue? [Y/n] 
    (Reading database ... 214035 files and directories currently installed.)
    Removing dhcp-client ...
    dpkg - warning: while removing dhcp-client, directory `/var/lib/dhcp'
        not empty so not removed.
    Purging configuration files for dhcp-client ...
    # ls -l /var/lib/dhcp
    ls: /var/lib/dhcp: No such file or directory

I.e., please figure out a way to show that maybe indeed that dir got
removed later when running postrm, etc.
-- System Information:
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux debian 2.4.20-k7 #1 Tue Jan 14 00:29:06 EST 2003 i686
Locale: LANG=zh_TW.Big5, LC_CTYPE=zh_TW.Big5

Versions of packages apt depends on:
ii  libc6                        2.3.1-10    GNU C Library: Shared libraries an
ii  libstdc++2.10-glibc2.2       1:2.95.4-15 The GNU stdc++ library

-- no debconf information