made PEEK-CHAR check its argument type explicitly, so
it will issue a TYPE-ERROR on e.g.
(WITH-INPUT-FROM-STRING (S "SZ")
instead doing PEEK-CHAR on *STANDARD-INPUT*
fixed completely-broken bignum-sized-consing code path in
profile.lisp (Code coverage testing? What's that?:-)
merged MNA/CMUCL compiler bug collection (sbcl-devel
2001-06-25) to BUGS