0.7.5.3:

0.7.5.3:
	made BUGS entry for the DEFTRANSFORM gotcha referred to below
	tweak in runtime.c, should still work the same (trying to make 80-char lines:-)
	put CSR's current diff into the main CVS since he's gone for a
		while and I want to work with it now without thinking
		about merging later...
	...BUGS entry for FILL problem
	...fixed FIXME re. %DATA-VECTOR-AND-INDEX
	...defined a DEFTRANSFORM on %DATA-VECTOR-AND-INDEX so
		things apparently go faster now
	...(didn't define another otherwise-reasonable DEFTRANSFORM on
		%DATA-VECTOR-AND-INDEX, for non-simple VECTORs,
		because it evidently tickles a bug in the DEFTRANSFORM
		system, as reported on sbcl-devel)