0.7.5.1:

0.7.5.1:
	Alpha build fix
	... define the relevant types earlier in the build
	... s/INTEGER-WITH-A-BITE-OUT/UNSIGNED-BYTE-WITH-A-BITE-OUT/
	Array performance enhancement
	... remove the (SAFETY 3) declaration from HAIRY-DATA-VECTOR-{REF,SET}
	... write tests for AREF beyond array bounds
	Buglet fix in pack.lisp
	... put FILL arguments the right way round