- add test for flags recovery
 - drop sockets, not needed
 - simplify test for owners and signumber

v2: remove polling (by avagin@)
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>