0.8.10.7:

0.8.10.7:
	Fix obsolete instance problem from Bruno Haible "installing sbcl"
	sbcl-devel 2004-04-15
	... Nikodemus' fix is so much better than my hack;
	... add the multiple inheritance test suggested by Bruno Haible;
	... also really really fix the threads.impure.lisp :if-exists
		:supersede thing (though the test still fails for me
		on 2.6 with :sb-futex)