0.pre7.56:

0.pre7.56:
	renamed the 3-bit lowtag codes from FOO-TYPE to FOO-LOWTAG,
		e.g. FUN-POINTER-LOWTAG, to make it clear that
		they're not parallel to the 8-bit codes like
		SIMPLE-FUN-HEADER-TYPE, or to things like FUN-TYPE
		used to represent (SPECIFIER-TYPE '(FUNCTION ..))
	and in C, renamed 'em from type_FooBar to FOO_BAR_LOWTAG
	also renamed some tag- and low-level-type-related names
		in runtime.h to be less quirky: ALL_UPPERCASE for
		constants, inline functions instead of macros
	The TRACE-TABLE-FOO things no longer need to be copied into
		sbcl.h by GENESIS, because C code no longer uses them.
	--
	Don't forget to update the DEFENUM in early-objdef.lisp.
	Don't forget to update the GENESIS code which copies
		them into sbcl.h.