With the permission of Romain Degez, CTO of Smartjog.

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

Libvirtd version 0.8.8 is capable of handling connections to virtio consoles but
the Python API is broken.

Moved to cc-common

Indicates if driver used for disk backing is using some sort of caching which
may lead to data corruption for a live migration.

Harmless renaming.

Support for registering/unregistering sub object to the cc-server.
Support for tag lifecycle handling (libev), was previously managed by plugins.

No more global variable.

Create/Start/Stop/Destroy/Undefine/Export/Suspend/Resume.