[PATCH] SCSI logical and physical names for udev

  Hi, Greg. Appended is scsi-devfs.sh, a script for udev to implement
devfs-style names for SCSI hard discs, CD-ROM's and generic devices.
This has been tested with both hard discs and CD-ROM's. The SCSI
generic support should be OK for when there is sysfs/udev support for
SCSI generic devices. SCSI tapes are not yet implemented because I
don't have one to test with.

In addition, this script supports physical names, based on PCI bus
location, both longhand (/udev/bus/pci/...) and shorthand
(/udev/sd/pci/*).