optimize relevance filter by doing a Table.fold directly rather than destroying the datastructure each time;
saves 2 sec per Sledgehammer invocation on my laptop!
(* Title: Pure/ML-Systems/polyml-5.1.ML
Compatibility wrapper for Poly/ML 5.1.
*)
fun reraise exn = raise exn;
use "ML-Systems/unsynchronized.ML";
use "ML-Systems/thread_dummy.ML";
use "ML-Systems/ml_name_space.ML";
use "ML-Systems/polyml_common.ML";
use "ML-Systems/compiler_polyml-5.0.ML";
use "ML-Systems/pp_polyml.ML";
val pointer_eq = PolyML.pointerEq;
fun share_common_data () = PolyML.shareCommonData PolyML.rootFunction;