Use switch_root instead of chroot in VM init stage1.
Create all /dev nodes in VMs, not just a handful.
Allow build-support RPM VMs to be booted with their native kernels.
build-support: Avoid rpmbuild -ta.
Turn rpm -U / -e failures in buildRPM into failure-on-success.
Also create (/fs)/run in build-support VM bootstrap code.
Include store paths used in an initrd in its closure.
build-support/vm: Add "kernel" to the list of common fedora packages.
VMs: Add Fedora 17 to the list of distros (only had 16 and 18).
VM: Do not mount tmpfs on /tmp to avoid running out of memory.