removed obsolete support for polyml-4.9.1;

--- a/lib/scripts/run-polyml-4.9.1	Sat Dec 30 12:38:51 2006 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,90 +0,0 @@
-#!/usr/bin/env bash
-#
-# $Id$
-# Author: Makarius
-#
-# Poly/ML startup script (for 4.9.1)
-
-export -n INFILE OUTFILE COPYDB COMPRESS MLTEXT TERMINATE NOWRITE
-
-
-## diagnostics
-
-function fail_out()
-{
-  echo "Unable to create output heap file: \"$OUTFILE\"" >&2
-  exit 2
-}
-
-function check_file()
-{
-  if [ ! -f "$1" ]; then
-    echo "Unable to locate $1" >&2
-    echo "Please check your ML system settings!" >&2
-    exit 2
-  fi
-}
-
-
-## compiler executables and libraries
-
-POLY="$ML_HOME/poly"
-check_file "$POLY"
-
-if [ "$(basename "$ML_HOME")" = bin ]; then
-  POLYLIB="$(cd "$ML_HOME"; cd "$(pwd -P)"; cd ../lib; pwd)"
-else
-  POLYLIB="$ML_HOME"
-fi
-
-export LD_LIBRARY_PATH="$POLYLIB:$LD_LIBRARY_PATH"
-export DYLD_LIBRARY_PATH="$POLYLIB:$DYLD_LIBRARY_PATH"
-
-
-## prepare databases
-
-if [ -z "$INFILE" ]; then
-  EXIT="fun exit 0 = (OS.Process.exit OS.Process.success): unit | exit _ = OS.Process.exit OS.Process.failure;"
-else
-  check_file "$INFILE"
-  POLY="$INFILE"
-  EXIT=""
-fi
-
-if [ -z "$OUTFILE" ]; then
-  COMMIT='fun commit () = (TextIO.output (TextIO.stdErr, "Error - Database is not opened for writing.\n"); false);'
-else
-  if [ -z "$COMPRESS" ]; then
-    COMMIT="fun commit () = (TextIO.output (TextIO.stdOut, \"Exporting $OUTFILE\n\"); PolyML.export (\"$OUTFILE\", PolyML.rootFunction); true);"
-  else
-    COMMIT="fun commit () = (PolyML.shareCommonData PolyML.rootFunction; TextIO.output (TextIO.stdOut, \"Exporting $OUTFILE\n\"); PolyML.export (\"$OUTFILE\", PolyML.rootFunction); true);"
-  fi
-  [ -f "$OUTFILE" ] && { chmod +w "$OUTFILE" || fail_out; }
-  rm -f "${OUTFILE}.o" || fail_out
-fi
-
-
-## run it!
-
-MLTEXT="PolyML.Compiler.printInAlphabeticalOrder := false; $EXIT $COMMIT $MLTEXT"
-MLEXIT="commit();"
-
-if [ -z "$TERMINATE" ]; then
-  FEEDER_OPTS=""
-else
-  FEEDER_OPTS="-q"
-fi
-
-"$ISABELLE_HOME/lib/scripts/feeder" -p -h "$MLTEXT" -t "$MLEXIT" $FEEDER_OPTS | \
-  { read FPID; "$POLY" $ML_OPTIONS; RC="$?"; kill -HUP "$FPID"; exit "$RC"; }
-RC="$?"
-
-if [ -n "$OUTFILE" ]; then
-  if [ -e "${OUTFILE}.o" ]; then
-    cc -o "$OUTFILE" "${OUTFILE}.o" -L"$POLYLIB" -lpolymain -lpolyml -lstdc++ || fail_out
-    rm -f "${OUTFILE}.o"
-  fi
-  [ -f "$OUTFILE" -a -n "$NOWRITE" ] && chmod -w "$OUTFILE"
-fi
-
-exit "$RC"

--- a/src/Pure/IsaMakefile	Sat Dec 30 12:38:51 2006 +0100
+++ b/src/Pure/IsaMakefile	Sat Dec 30 12:41:59 2006 +0100
@@ -43,12 +43,11 @@
   Isar/session.ML Isar/skip_proof.ML Isar/specification.ML			\
   Isar/term_style.ML Isar/theory_target.ML Isar/thy_header.ML Isar/toplevel.ML	\
   ML-Systems/polyml-4.1.4-patch.ML ML-Systems/polyml-4.2.0.ML			\
-  ML-Systems/polyml-4.9.1.ML ML-Systems/polyml-5.0.ML 				\
-  ML-Systems/polyml-interrupt-timeout.ML ML-Systems/polyml-posix.ML		\
-  ML-Systems/polyml.ML ML-Systems/poplogml.ML ML-Systems/smlnj.ML		\
-  Proof/extraction.ML Proof/proof_rewrite_rules.ML Proof/proof_syntax.ML	\
-  Proof/proofchecker.ML Proof/reconstruct.ML Pure.thy ROOT.ML			\
-  ProofGeneral/parsing.ML ProofGeneral/pgip_input.ML 				\
+  ML-Systems/polyml-5.0.ML ML-Systems/polyml-interrupt-timeout.ML		\
+  ML-Systems/polyml-posix.ML ML-Systems/polyml.ML ML-Systems/poplogml.ML	\
+  ML-Systems/smlnj.ML Proof/extraction.ML Proof/proof_rewrite_rules.ML		\
+  Proof/proof_syntax.ML Proof/proofchecker.ML Proof/reconstruct.ML Pure.thy	\
+  ROOT.ML ProofGeneral/parsing.ML ProofGeneral/pgip_input.ML			\
   ProofGeneral/pgip_isabelle.ML ProofGeneral/pgip_markup.ML                     \
   ProofGeneral/pgip.ML ProofGeneral/pgip_output.ML ProofGeneral/pgip_tests.ML	\
   ProofGeneral/pgip_types.ML ProofGeneral/preferences.ML			\

--- a/src/Pure/ML-Systems/polyml-4.9.1.ML	Sat Dec 30 12:38:51 2006 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,10 +0,0 @@
-(*  Title:      Pure/ML-Systems/polyml-4.9.1.ML
-    ID:         $Id$
-
-Compatibility wrapper for Poly/ML 4.9.1.
-*)
-
-use "ML-Systems/polyml-4.1.4-patch.ML";
-use "ML-Systems/polyml.ML";
-
-val pointer_eq = PolyML.pointerEq;