Starting from syslinux 5.00, isolinux.bin is dependent on
ldlinux.c32 to boot for BIOS machine. syslinux > 5.00 is
delivered with Fedora 21 cloud image which breaks the boot
from ISO if ldlinux.c32 doesn't exist.
Change-Id: If722f36aeaabc759d93ef6ae3f49b21bb840a92d
Closes-Bug: 1449882
This adds support to UEFI secure boot by copying signed shim and
grub bootloaders into ramdisk image.
Closes-Bug: 1419707
Change-Id: I1193cd3a9011855a6804966a31c7c0e28da90ada