0.6.9.21:

0.6.9.21:
	strengthened condition system error-checking to fix the bug
		reported by Eric Marsden on cmucl-imp@cons.org
		2001-01-06
	undid DEFTRANSFORM %WITH-ARRAY-DATA since it didn't work right
	WITH-ARRAY-DATA :OFFSET-VAR stuff tidied up (e.g. no longer
		IGNORABLE)
	replaced amazing old STRING-FOO functions with smaller,
		simpler, slightly slower versions