0.6.8.12:

0.6.8.12:
	removed "MNA: open-coded-simple-array patch"
	Argh! typecase-implicit-declarations doesn't add declarations
		after all.. just a messy no-op! And when I rewrite it
		to 'work', I finally notice it's a fundamentally broken
		idea. Gads. Delete it (and hope for real fix for #62).
	left small rewrites in CASE-BODY: Naming quantities is good.
	exported SB-KERNEL:%PUTHASH so DEFUN sees DEFKNOWN & vice versa
	removed bogus FOLDABLEness from hash table accessors