0.pre7.5:

0.pre7.5:
	moved remaining contrib/*-extras.lisp stuff to main system
	deleted unused *CHAR=-FUNCTIONS*
	Since some of the new transforms use LOOP, and are used in
		cross-compilation, it'd be nice if LOOP worked more
		correctly in cross-compilation..
	..changed SUBTYPEP to SB!XC:SUBTYPEP in loop.lisp
	..changed TYPEP to SB!XC:TYPEP in loop.lisp
	Now that LOOP calls SB!XC:TYPEP, CROSS-TYPEP needs to be smart
		enough to type-expand its arguments, so that e.g.
		(SB!XC:TYPEP 0 'INDEX) works.
	moved definition of INDEX-OR-MINUS-1 type alongside INDEX
	deleted obsolute LOOP NODECLARE stuff
	miscellaneous other tidying in loop.lisp
	added various bug 117 workarounds so SBCL code builds without
		bogus WARNINGs from FIND/POSITION inline expansions