Instead of printing cubie, use the BOARDTYPE instead.  This allows other
boards to use the cubie code but see a more useful BOARDTYPE.  We could
also use it to enable more apporpriate configuration for the board.
Eat trailing backslash like bash and pdksh (not zsh). CBACK+CEOF = TEOF
undo eating the trailing backslash now that the shell has been fixed.
remove unused assignment