efivar 0.23 - Work with gcc 6 / binutils 2.26 - get the immutable bits of variable edit/delete cycles right - get the byte order right in all representations of guids - link correctly without a previous version of efivar installed - don't have a 1 in some representations of efi_guid_empty / efi_guid_zero - compile without -fshort-wchar - work slightly better with clang