update

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
restorer: Print error code from sys_set_robust_list

Some syscalls return error code, so for easier debugging
instead of zapping it -- print it together with error
message.

And make error message more detailed as well.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
update

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
update

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>