xen recipe: add xz dependency to support lzma compressed PV kernels.
qemu: added qemu 1.5.2 recipe for use with xen
xen recipe: support standalone qemu (upstream) recipe instead of building under xen package and require qemu package as dependency for xen-base.
Add MIT license and checksum to hype images.
hype-initramfs & hype-rootfs: update recipes to use relative require paths.
xen recipe: add symlink for /etc/sysconfig/xendomains -> /etc/default/xendomains to workaround issue in xendomains init script.
hype: support upgrade of rootfs on live systems when placing new rootfs.img.update alongside rootfs.img and rebooting.
Revert "hype: support upgrade of rootfs on live systems when placing new rootfs.img.update alongside rootfs.img and rebooting."

This reverts commit 5418a968763b054423afdbeeb81751271a8aaf9c.
kernel: support built-in xen-pciback to support boot-time arguments.
xen recipe: add build support for qemu-xen-traditional as optional separate package xen-qemu and a fix to build seabios.
hype-rootfs: include both upstream qemu and xen-qemu in rootfs.
xen-recipe: cross compilation fixes, and recipe now only support x86_64 target since i386 xen hypervisor is not supported.