0.8.12.27:

0.8.12.27:
	I WIN!
	... fix for multiple bugs with SLOT-DEFINITION-ALLOCATION not
		being :INSTANCE or :CLASS:
	... step 1: don't assert that it must be;
	... step 2: handle a NULL location when generating optimized
		accessors, returning a function that calls ERROR.
	... add a slightly-reworked test from AMOP (mostly the rework is
		because at that stage in AMOP we're still in closette,
		not the full MOP)