GitLab

Detail:
  Makefile and !Mk* updated, and corresponding unused files put in the attic.
  Add an interim OHCIHALLib and EHCIHALLib target so that the HAL library variant still builds.
  Split messages into CmdHelp and Messages per a normal C component.
  Remove unused wsconsio/wsmousevar porting headers, no longer used.
Admin:
  Submission for USB bounty.
  Note, the version number of the resulting module will jump to match the top level VersionNum file.

Version 1.20. Tagged as 'USBDriver-1_20'