0.9.3.68:

0.9.3.68:
	Fix a bug introduced in 0.9.3.44 (reported by James Y Knight
	sbcl-devel 2005-08-19)
	... when a bound is more extreme than
		most-frobtive-fooble-float, make an open bound;
	... when both thingies are of the same type of float,
		safely-binop can proceed regardless (as float-traps
		are masked).
	... James Y Knight's test case.