0.8.0.50:

0.8.0.50:
	Fixes for ADD-METHOD.[12] and FIND-METHOD error cases
	... ADD-METHOD should return the generic function (but preserve
	method-returning in the internal function ADD-NAMED-METHOD
	... FIND-METHOD needs to signal an error if the lengths of the
	specializers isn't the same as the number of required arguments
	to the generic function.  Turn the test in REAL-GET-METHOD into
	an AVER.
	... REMOVED-NAMED-METHOD is unused; delete it.
	... incompatible lambda lists don't actually require an error of
	type PROGRAM-ERROR to be signalled, and in fact this change
	can make the error signalled be an ERROR.  Adjust the test.