This is not /boot/grub for a very good reason:
Our Live media uses /boot/sabayon instead of /boot/grub
and this has also the side effect that we can put
/boot/sabayon into the EFI Boot Partition avoiding
name clashing. Our /boot/sabayon inside that partition
will contain a simple grub.cfg doing two things:
1. set the correct prefix to the real grub boot partition
(via set prefix=(hdX,X)/boot/grub
2. load the real grub.cfg file (via configfile (hdX,X)/...)
In this way, we can ship a SecureBoot signed grubx64.efi
file and have it working with all the partition layouts.
The "bootstrap" grub.cfg file is created by our scripts
that are sourced by grub-mkconfig.
