With XENSTORE_SERVER_FEATURE_WATCHDEPTH available, special watch
handling needs to be extended:
- when a special watch is set with depth = 1, the domid is added to
the watch event
- it is possible to watch for @releaseDomain/<domid>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jason Andryuk <jason.andryuk@amd.com>