[Libvir] Unified Xen patch (first complete version)

This is the second version of the unified Xen patch, and the first completed version. It fixes a lot of broken things from the earlier version. However the patch needs a lot more testing before it could be considered for inclusion. Indeed, suggestions for how to test this would be welcome. I'm following up places where 'make check' is failing with this patch: hopefully none of them will be serious. But I wonder how much coverage 'make check' gives me. Rich. -- Emerging Technologies, Red Hat http://et.redhat.com/~rjones/ 64 Baker Street, London, W1U 7DF Mobile: +44 7866 314 421 Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 Directors: Michael Cunningham (USA), Charlie Peters (USA) and David Owens (Ireland)