[libvirt] [PATCH] [RFC] xen domctl version 6

xen-unstable c/s 20685 changed the domctl interface, adding a field to xen_domctl_getdomaininfo structure. This additional field causes stack corruption in libvirt. xen-unstable c/s 20711 rightly bumped the domctl interface version so it is at least possible to handle the new field. The attached patch accounts for shr_pages field added to xen_domctl_getdomaininfo structure. I'm not thrilled about the changes to all the macros - suggestions for improvement welcomed. Tested with domctl version 5 and 6. Regards, Jim