Make style changes that are the equivalent of recent changes to st,
such as using 'struct osst_tape' where we used to have 'OS_Scsi_Tape'
as a typedef. Osst behavior is not affected by this patch.
signed-off-by: Willem Riede <osst@riede.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>