0.pre7.76:

0.pre7.76:
	As long as I'm testing whether the old code works as an xc
		host, I might as well make some pending cleanups..
	..made CERROR use COERCE-CONDITION directly instead of
		trying to screen it from the already-a-CONDITION case
	..renamed stems-and-flags.lisp-expr to build-order.lisp-expr
		(taking a hint from the explanatory comment at head
		of file:-)
	..factored should-we-CHECK-IT logic out of OUTPUT-OBJECT into
		COMPOUND-OBJECT-P, and shared it with DUMP-OBJECT
	..renamed CIRCULAR-LIST-P to CYCLIC-LIST-P
	..factored out UNIQUELY-IDENTIFIED-BY-PRINT-P too
	..deleted unused INSTANCE-SET-CONDITIONAL and INSTANCE-XADD
		stuff