[Gutsy] hplip needs dependency on python-qt3

Two issue we had with Feisty seem to pop up again:
1) The 3 HPLIP menu entries clutter up the menu for people that don't have HP hardware.
In Feisty we did hide the HPLIP menu entries by setting NoDisplay=true in the desktop files. The HPLIP entries could be made visible by clicking System > Preferences > Main Menu which creates a copy of the desktop file in ~/.local/share/applications/ with NoDisplay=false. This approach should be avoided as it can lead to duplicate HPLIP menu entries on dist-upgrades because of name changes, additions or removals of desktop files.
2) People expect menu entries to work without the need to install extra packages. The python-qt3 package is not installed by default because this package and its dependencies take up too much space on the Ubuntu Desktop CD. After clicking the HPLIP entries a GUI message "the python-qt3 package must be installed for this program to work" is shown and the user needs to manually install this package.

I believe the best way to avoid these issues is to create a hplip-gui
package as suggested by Till Kamppeter in bug #67892:

> So my suggestion is to move the 3 .desktop files into a
> separate binary package named "hplip-gui", but with the
> "NoDisplay=true" lines removed. "hplip-gui" will then depend on
> python-qt and hplip and it will only be installed by default on
> the Kubuntu (KDE-based) desktop CD but not on the desktop CDs
> of Ubuntu (GNOME) and Xubuntu (XFCE). the "hplip" package
> should recommend/suggest "hplip-gui" so that a package
> installer tool makes the user aware of the available GUI.

> So a user who wants to have the HPLIP GUIs on Ubuntu or Xubuntu
> has to install only the "hplip-gui" package and everything
> needed gets installed.

This would close the hplip upgrade task of bug #86893, bug #67892/#134480 and this bug #137168.

hplip (2.7.7.dfsg.1-0ubuntu2) gutsy; urgency=low

  * debian/control, debian/hplip.install, debian/hplip-gui.install,
    debian/rules:
    Moved menu entries for the GUI utilities into the new hplip-gui package.
    This package requires python-qt3 and so the menu entries can never appear
    if python-qt3 is not installed. Let the main package (hplip) recommend
    hplip-gui instead of python-qt3 now. Fixes: LP: #67892, LP: #86893,
    LP: #134480, LP: #137168

 -- Till Kamppeter <email address hidden> Wed, 5 Sep 2007 10:05:57 +0100