Xen provides a xen_version hypercall to query the values of several interesting things (like hypervisor version, commandline used, actual changeset, etc.). Create a user-friendly and efficient wrapper around the libxc function to provide values for xl info output. Signed-off-by: Andre Przywara -- Andre Przywara AMD-Operating System Research Center (OSRC), Dresden, Germany Tel: +49 351 488-3567-12