new whonix_build_both script: small hack to build both virtual machines, as long as whonix_build does not support --all.
fix
removed hardware modifications, very little gain, while it breaks enabling uefi and confuses other things as well
fix
added git to build dependencies
fix
no longer store backups of grub.cfg in /boot/grub/, store it in /var/lib/whonix/grub-backup instead, so it can not confuse grub, if they change something some day