update-apt-xapian-index-dbus is missing.

[Usarin Heininga]

The file update-apt-xapian-index-dbus was removed from this package just before focal came out.
The problem is that it is used by libqapt3, which is used by Muon.
libqapt3 uses the dbus interface provided by update-apt-xapian-index-dbus to update the xapian index and to report progress and completion signals to libqapt3 clients, like Muon.
The result is Muon not being able to update the xapian index and using an old out of sync xapian index. So I have to do that manually.
I could write a patch for libqapt3 to use update-apt-xapian-index directly and parse the output.
But maybe it is possible to revive update-apt-xapian-index-dbus. This script already does the parsing and other clients would again be able to use a nice clean dbus interface.

Regards,

Usarin Heininga