0.8.2.1:

0.8.2.1:
	As reported by Edi Weitz on sbcl-help 2003-07-17, WITH-OUTPUT-TO-STRING
	should accept an :ELEMENT-TYPE keyword argument:
	... make it so;
	... make it so for MAKE-STRING-OUTPUT-STREAM too;
	(implementation of such while preserving efficiency in our (vector nil)
		world is slightly contorted; we accumulate arbitrary
		characters, then convert to the requested type when the
		stream's string is requested)
	... add tests for reasonable behaviour.