Add multiplatform library for raw SCSI commands

Several tools need to perform raw SCSI commands, and we need to support Linux,
Windows and Mac OS, without pulling tons of dependencies to build it easily.
This very simple library has no dependency and supports Linux.

TODO:
- windows
- mac os

Change-Id: I496f5ad2490bd3e96ad962d31cce4e511a523c3a
4 files changed