0.6.11.15:

0.6.11.15:
	some cleanups related to the type hackathon in 0.6.11.13..
	..restored :TYPE declaration for FORMAT slot in NUMERIC-TYPE
	..restored :TYPE declaration for TYPES slot in COMPOUND-TYPE
	..moved LIST, CONS, and NULL to a more logical point in
		*BUILT-IN-CLASSES*
	..rearranged CTYPE, ANY/TYPE, and EVERY/TYPE to share code
	..added tests related to CTYPE of COMPOUND-TYPE
	..redid INTERSECTION :SIMPLE-SUBTYPEP to share EVERY/TYPE too
	added tests for ANY/TYPE and EVERY/TYPE, fixed EVERY/TYPE
	moved SWAPPED-ARGS-FUN earlier to facilitate inlining, putting
		it in SB!INT so it can go in early-extensions.lisp
	deleted unused LETF and LETF*