This patch is originally from Christoph Hellwig.

This patch coverts from Scsi_Foo typefs to struct scsi_cmnd, and moved from
the SCSI data direction constants to the DMA ones.

It also switches to the proper (or so they tell me) use of <scsi/*.h>
headers.  This also includes some additional reshuffling to avoid useless
headers in the usb-storage local headers (to improve compile time).
Signed-off-by: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>