prove_fun: new; no longer depends upon the version in simpdata.ML
prove_fun: new; no longer depends upon the version in simpdata.ML

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle