0.8.14.26:

0.8.14.26:
	Add references to the FORMAT subsystem
	... make FORMAT-ERROR inherit from REFERENCE-CONDITION;
	... make REFERENCE-CONDITION exist on the host, with
		more-or-less the same interface (though no printing);
	... elide printing "See also: " if we have a reference condition
		but no references.  (This change in a
		REFERENCE-CONDITION's contract is probably going to
		irritate our friends in the slime world...);
	... decorate format-related logic with :REFERENCES initargs.