0.7.7.20-backend-cleanup-1.1:

0.7.7.20-backend-cleanup-1.1:
	I hope this works.
	This is the start of a branch aimed to clean up, somewhat, the
		backend code. It is not expected that code on this
		branch will necessarily build and run on all
		architectures. For a start, this checkin will only work
		on x86.
	Start TYPE-VOPS genericization:
	... new src/compiler/{early,late}-type-vops.lisp files,
		containing bits of what was formerly in
		x86/type-vops.lisp