lib/scripts/polyml-version

HOL/Tools/function_package: imporoved handling of guards, added an example

#!/usr/bin/env bash
#
# $Id$
#
# polyml-version --- determine Poly/ML runtime system version

echo -n polyml

if [ -x "$ML_HOME/poly" ]; then
  "$ML_HOME/poly" -noDisplay -r /dev/null | head -n 1 | \
    sed -n 's,^Poly/ML RTS version [^ ]*\(-[^ ]*\).*$,\1,p'
fi