Merged requested to merge github/fork/tomalok/master into master
Created by: tomalok
- Latest Amazon Linux enables 64bid when creating ext4 partitions, which is incompatible with syslinux/extlinux bootloader. Explicitly disable 64bit support, as it's highly unlikely we'll need a boot volume >16 TiB.
- update-extlinux.conf - switch kernel default to 'virt', as 'hardened' no longer exists.