[rb-general] New multi-arch enhancements

[Orians, Jeremiah (DTMB)]

> thanks. whats knight? :)
Knight is an ancient 16/32/64bit Big Endian architecture which can be implemented in TTL https://github.com/oriansj/stage0/blob/master/ISA_HEX_Map.org#instruction-listing

The Knight-Native port is to run the compiler on Bare metal and thus eliminate everything else from the software root of trust.
(No Operating system or runtime or Microcode or Firmware)

-Jeremiah