smaccmpilot.org: native gcc prerequisites is more precise
smaccmpilot.org: native gcc prerequisites is more precise

* this is our biggest problem foudn in the field - we
  should probably move the rtv stuff to be disabled by
  default if we're not goign to use it in the flight app

GaloisInc/smaccmpilot-org,GaloisInc/ivorylang-org