revert this idea of automatically invoking "metisFT" when "metis" fails;
there are very few good reasons why "metisFT" should succeed when "metis" fails, and "metisFT" tends to "diverge" more often than "metis -- furthermore the exception handling code wasn't working properly
(* Title: HOL/Library/Code_Prolog.thy
Author: Lukas Bulwahn, TUM 2010
*)
header {* Code generation of prolog programs *}
theory Code_Prolog
imports Main
uses "~~/src/HOL/Tools/Predicate_Compile/code_prolog.ML"
begin
end