iscsi bug fixes

These are bug fixes for LSI support, big endian fix for sense len calculation, digest porting errors, and printing output. There have been several iscsi patches floating around from Andrew and other users and this incorporates those patches.

The patches were made over scsi-misc, but apply to Linus's current git tree. One patch applies at a offset because of some of the queue work changes in linus's tree but it is ok.