0.8.0.78.vector-nil-string.5:

0.8.0.78.vector-nil-string.5:
	Make MAKE-STRING work as expected
	... respect ELEMENT-TYPE
	... and while we're at it, make the transform not confuse the
		compiler when the user's ELEMENT-TYPE isn't a subtype
		of character
	Also add some tests for some of the gotcha's we've found so
	far.