Install nova-compute-kvm when using kvm
Set HYPERVISOR to kvm when available
Fully open secgroup and support for loop devices
Merge branch 'master' into cinder-support

Conflicts:
	install.sh
Use BlocDeviceDriver for Cinder

The default LVM iSCSI driver has problems because LXC:

https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1226855

See:

https://wiki.openstack.org/wiki/BlockDeviceDriver