0.7.8.45:

0.7.8.45:
	Some more maintenance on MAKE-SEQUENCE, this time on LIST-like
		type specifiers, motivated by Paul Dietz' ansi-tests
		example of (MERGE 'NULL '(1 3) '(2 4) #'>)
	... abstract some more of the errors into helper
		macros, in preparation for their use in
		MAP/MERGE/CONCATENATE/COERCE;
	... make MAKE-SEQUENCE detect (most) wrong uses of CONS/NULL
		and friends, and error on too-hairy cases.
	... probably still non-compliant (throwing an error) on e.g.
		(MAKE-SEQUENCE '(CONS * (CONS * NULL)) 2) :-(