Fix WIP branch

Hello,

Here are some patches to fix some bugs in pending updates in your WIP branch and update ``systemd-selinux``. Feel free to modify your "update commits" in ``WIP`` to fix the several bugs before inclusion in branch ``master`` instead of including my patches in git history.

Also, I've added a comment in ``util-linux-selinux`` because I tried to change ``systemd`` to ``systemd-selinux`` in ``makedepends`` and this failed because of cyclic build-time dependencies. I've written the comment to state the issue and prevent other people from losing time trying to do the same.

Thanks!