Bug#604959: xdgutils: please introduce (sane) xdg-terminal

[Nikolas Nyby]

It seems there have been many changes upstream since this bug was
originally opened 20 years ago.

The upcoming xdg-utils 1.3.0 release re-introduces xdg-terminal. I'm not
sure if the details in this ticket are directly relevant anymore - maybe
we can revisit how things are working when xdg-utils 1.3.0 is released,
and this ticket can be closed.