Comment # 16 on bug 1189879 from Ludwig Nussel

The grub related script were fixed by Michael to read the new location. That
fixes all linked bugs already. Thanks for that! It's the right solution IMO.
I'll add the compat link back in addition. PR filed. Nevertheless script that
rely on it should really be adjusted the new location. There is no promise how
/boot will look like in the future. See also
https://systemd.io/BOOT_LOADER_SPECIFICATION/