Fix feps on 64 bit

core/bootstrap/image/image.factor

@@ -228,6 +228,12 @@ M: fixnum '
     bootstrap-most-positive-fixnum between?
     [ tag-fixnum ] [ >bignum ' ] if ;
 
+TUPLE: fake-bignum n ;
+
+C: <fake-bignum> fake-bignum
+
+M: fake-bignum ' n>> tag-fixnum ;
+
 ! Floats
 
 M: float '

core/bootstrap/primitives.factor

@@ -181,7 +181,7 @@ define-union-class
 ! A predicate class used for declarations
 "array-capacity" "sequences.private" create
 "fixnum" "math" lookup
-0 bootstrap-max-array-capacity [ between? ] 2curry
+0 bootstrap-max-array-capacity <fake-bignum> [ between? ] 2curry
 define-predicate-class
 
 ! Catch-all class for providing a default method.