0.8.0.42:

0.8.0.42:
	Quieten the compiler slightly for (LENGTH <VECTOR>)
	... one of the transforms wants to constant-fold the above when
		<VECTOR> is a 1d SIMPLE-ARRAY of known dimensions.
		However, the deftransform definition (with a simple-array
		type requirement) caused the compiler to complain when
		the argument was known to be a vector but not a simple-array.
		Instead, leave the type requirement for the transform open,
		and GIVE-UP-IR1-TRANSFORM (with no arguments => silence)
		if the argument isn't simple.
	... write some tests for LENGTH on vectors