lxc_log_init will leak an fd when it is called by a long running
program that may call lxc_container_new multiple times. Fix by
only opening the log if it is not already open.
Signed-off-by: Dwight Engen <dwight.engen@oracle.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>