0.8.3.56:

0.8.3.56:
	Fix (BYTE 0 0)
	... again, in the %LDB-and-friends DERIVE-TYPE methods, but this
		time the failure seemed more justifiable, because...
	... (UNSIGNED-BYTE 0) is quite naturally interpreted as
		(INTEGER 0 0), and that's what we wrote, but ...
	... ANSI saith "s---a positive integer".  Ugh.  So ...
	... implement SB!INT:UNSIGNED-BYTE* that does the right thing,
		and use it to simplify derive-type logic.