1. Added the Tribble 16-bit IBM SCSI adapter.
2. Reworked the vendor unique commands to counter audio issues as well as adding some undocumented commands (thanks to the source code of xmcd!), plus replacing the NEC CD-ROM DRIVE:75 with the :38 one.
- 86Box's own headers go to /86box
- munt's public interface goes to /mt32emu
- all slirp headers go to /slirp (might want to consider using only its public inteface)
- single file headers from other projects go in include root