b=2353

r=shaver

Delete IOC_CONNECT,DISCONNECT and use obd_self_export instead
of creating connections for lctl. Also delete the IOC_DEVICE comamnd
and make the ioctl interface stateless.  The lctl probe command is now
a noop, and lctl device is still used to set the device, although the
current device state is only saved in lctl now, and not the kernel.