0.7.7.24:

0.7.7.24:
	READ-VAR-INTEGER and READ-PACKED-BIT-VECTOR are external to
		SB!C, so don't need double colons in SB!C: prefixes.
	made (FORMAT "foo" "bar") fail earlier, at
		FILL-POINTER-OUTPUT-STREAM ctor time, instead of
		when the FILL-POINTER-OUTPUT-STREAM is first used for
		output
	got rid of *TOPLEVEL-LAMBDA-MAX* and
		*PENDING-TOPLEVEL-LAMBDAS* (and FORCE-P arg to
		SUB-COMPILE-TOPLEVEL-LAMBDAS and
		COMPILE-TOPLEVEL-LAMBDAS, and TOPLEVEL-CLOSURE
		in COMPILE-TOPLEVEL, and various now-redundant
		FORCE-P-only calls to COMPILE-TOPLEVEL-LAMBDAS)