* XFCE4/Hildon: Log to syslog, see also:
<https://github.com/postmarketOS/pmbootstrap/pull/762>
* Fix XFCE4 didn't start in qemu-amd64, because it required
libEGL.so.1, which is provided by mesa-egl. This is a dependency
of device-qemu-amd64-x11 now. (It worked for Hildon and Weston,
because they pull mesa-egl in with other packages.)