0.7.6.20:

0.7.6.20:
	(I set out to suppress compiler macro expansion when
		(> COMPILATION-SPEED SPEED), but now that I've read
		the DEFINE-COMPILER-MACRO specification, I think that'd
		probably be illegal. So I guess I won't.)
	As far as I can tell from the ANSI spec, it's nonconforming to
		return NIL from COMPILER-MACRO-FUNCTION just because of
		a NOTINLINE declaration. So make
		COMPILER-MACRO-FUNCTION ignore NOTINLINEness.
	(I set out to make (DEFINE-COMPILER-MACRO (SETF FOO) ...) work,
		but gave up, first because (SETF (FOO X) Y) expands
		into (FUNCALL #'(SETF FOO) Y X) and it's not clear
		that it's kosher to use compiler macros to transform
		FUNCALL, and second because ANSI 3.2.2.1 says any
		compiler macro definition can always be ignored.)
	made DEFINE-COMPILER-MACRO (SETF FOO) issue a STYLE-WARNING
	made COMPILER-MACRO-FUNCTION check for legal function names
	factored out LEGAL-FUN-NAME-OR-TYPE-ERROR to support this
	tiny ANSI-compliance tweak: made
		(SETF (COMPILER-MACRO-FUNCTION FOO NIL) ...) work
	various tweaks to *DEBUG-HELP-STRING* (especially to help
		people avoid messing with restart numbers, ow!)
	s/make-breakpoint-info/%make-breakpoint-info/, since leaving
		the traditional default name MAKE-... exposed when you're
		really supposed to use CREATE-... is an attractive
		nuisance
	s/code-location-number/code-location-selector/, since it's
		not necessarily a number