Upstream release of 0.8.5
    
    - Enable JSON and netdev features in QEMU >= 0.13
    - framework for auditing integration
    - framework DTrace/SystemTap integration
    - Setting the number of vcpu at boot
    - Enable support for nested SVM
    - Virtio plan9fs filesystem QEMU
    - Memory parameter controls
    - various improvements and bug fixes
    Daniel