0.pre7.138:

0.pre7.138:
	merged CSR "{find,position}-if-not" patch from sbcl-devel
		2002-01-15
	tweaked %NATURALIZE-C-STRING to reduce the ridiculous consing
		(reported on cmucl-imp ca. 2002-01-15 by Lynn Quam) in
		the reinvent-the-strlen() code
	added assertion in GENESIS to try to catch "SB!"-vs.-"SB-"
		prefix mistakes in code it works with