Here are client, server programs and two libraries for dumping client
sockets and syslog socket.

The client can ask server to save a value and then request it later.
We suppose that after dumping and restoring the client will get
the same value.

So the dump callback requests the value and save it in a file.
The restore callback creates a new socket and ask server to save the
value from the file.

v2: open a syslog socket
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>