Bug#473863: autoremove needs two runs when one would suffice

[jidanni@jidanni.org]

Package: apt
Version: 0.7.11
Severity: minor

The following is a perfect example of users needing an additional
autoremove step (the third autoremove below) when it should all be
accomplished once (at the second autoremove below). (The first
autoremove below is just to show you that I have nothing up my
sleeve -- a clean start, as is the use of deborphan.)

# deborphan
# apt-get --purge autoremove
0 upgraded, 0 newly installed, 0 to remove and 12 not upgraded.
# set gimp-python djvulibre-plugin djvulibre-desktop djview4
# apt-get --purge autoremove $@
The following packages will be REMOVED:
  djview4* djvulibre-desktop* djvulibre-plugin* gimp-python*
0 upgraded, 0 newly installed, 4 to remove and 12 not upgraded.
After this operation, 3121kB disk space will be freed.
Do you want to continue [Y/n]? y
Removing djvulibre-plugin ...
Removing djview4 ...
Removing djvulibre-desktop ...
Removing gimp-python ...
# apt-get --purge autoremove
The following packages were automatically installed and are no longer required:
  xsltproc python-numeric libqt4-qt3support libqt4-core libsqlite0 libffi5
  libqt4-gui libqt4-sql xdg-utils libaudio2 python-gtk2 python-cairo
  qt4-qtconfig python-gobject
The following packages will be REMOVED:
  libaudio2* libffi5* libqt4-core* libqt4-gui* libqt4-qt3support* libqt4-sql*
  libsqlite0* python-cairo* python-gobject* python-gtk2* python-numeric*
  qt4-qtconfig* xdg-utils* xsltproc*
0 upgraded, 0 newly installed, 14 to remove and 12 not upgraded.
After this operation, 27.3MB disk space will be freed.
Do you want to continue [Y/n]? y