Coq 8.9 compat: Require Import ZArith.BinIntDef to get numeral notations for Z

generator/characteristic.ml

@@ -1662,7 +1662,7 @@ let cfg_file str =
    [ Cftop_coqs ([
       Coqtop_set_implicit_args;
       Coqtop_require [ "Coq.ZArith.BinInt"; "TLC.LibLogic"; "TLC.LibRelation"; "TLC.LibInt"; "TLC.LibListZ"; "CFML.Shared"; "CFML.CFHeaps"; "CFML.CFApp"; "CFML.CFPrint"; "CFML.CFBuiltin" ];
-      Coqtop_require_import [ "CFML.CFHeader" ];
+      Coqtop_require_import [ "Coq.ZArith.BinIntDef"; "CFML.CFHeader" ];
       Coqtop_custom "Delimit Scope Z_scope with Z.";
       Coqtop_custom "Local Open Scope cfheader_scope.";
       (*DEPRECATED Coqtop_custom "Open Scope list_scope.";*)