0.7.12.42:

0.7.12.42:
	A couple of minor fixes for bugs caught by Paul Dietz' test
	suite.
	... adjust source transform for CONSTANTLY to return a
		side-effect-free function;
	... OTHERWISE only introduces an otherwise-clause in TYPECASE if
		it's the last clause;
	... while I'm frobbing TYPECASE, make the style-warning format
		string such that output is pretty.
	... NEWS update