Dropping /etc/grml_version from inside the squashfs file doesn't seem to be an
option AFAICS, cat /live/image/GRML/grml-version is possible anyway nowadays,
so closing this issue.
I don't want to rebuild squashfs just to be able to adjust output that's being
displayed when running 'grml-version'. Would be nice to support /etc/
grml_version as well as a file which is placed outside the "chroot" system (we
already have a file!).