CVE-2015-1331: lxclock: use /run/lxc/lock rather than /run/lock/lxc

This prevents an unprivileged user to use LXC to create arbitrary file
on the filesystem.

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>
void container_mem_unlock(struct lxc_container *c)
{
	lxcunlock(c->privlock);
}

void container_mem_unlock(struct lxc_container *c)
{
	lxcunlock(c->privlock);
}
