0.9.15.32:

0.9.15.32:
	More baby steps to the removal of the :fast-function initarg.
	This time, some permutation vector cleanups, partly motivated by
	similar changes in CMUCL and partly by the need to communicate
	information between a method function and the other method
	initargs.
	... remove the "interning" of permutation vectors themselves.
	... the first element of a permutation vector is no longer "for
		information"
	... destructively update the slots of a pv when the class
		changes.  (NB: this has threadsafety implications:
		revisit when the dust settles.)
	... delete the PV-TABLE-SYMBOL code; replace the somewhat crufty
		fashion of getting access to the method's pv-table
		(using symbol-value of an uninterned symbol, which is
		SET by INITIALIZE-METHOD-FUNCTION) by a LOAD-TIME-VALUE,
		relying on INTERN-PV-TABLE to, well, intern a PV table.
		(NB: this has performance implications if method
		functions are not compiled.)
	... some test cases: some simple tests of class redefinition and
		slot value, and some where there is a make-method-lambda
		customization.  Also log a failing case where the PV
		slot-value optimization is broken.