This update for xdg-utils fixes the following issues:

- boo#959912: xdg-su did not recognize LXQt session, add LXQt support

The following changes are also included:

- xdg-mime: support for KDE Frameworks 5.6
- xdg-mime does not write the file it reads in a query (BR95051)
- xdg-screensaver: Add cinnamon-screensaver D-Bus API support.
- xdg-open: standardize output redirection style