lib/Tools/symbolinput

- Moved rewriting functions to meta_simplifier.ML
- dest_abs now also takes an optional variable name as an argument
- beta_conversion takes additional flag as an argument. Fully reduces
the term if set to true

Some tuning:
- tuned fix_shyps in instantiate, implies_intr, implies_elim, reflexive,
transitive, beta_conversion, abstract_rule
- combination: chktypes derives types of f and t from type of == instead
of using fastype_of

New primitives:
- eta_conversion
- incr_indexes: increment indexes in theorems
- cterm_incr_indexes: increment indexes in cterms
- cterm_match, cterm_first_order_match
- rename_boundvars

#!/bin/bash
#
# $Id$
# Author: Markus Wenzel, TU Muenchen
# License: GPL (GNU GENERAL PUBLIC LICENSE)
#
# DESCRIPTION: translate symbols into \<...> sequences

#set by configure
AUTO_PERL=perl

exec "$AUTO_PERL" -w "$ISABELLE_HOME/lib/scripts/symbolinput.pl" "$@"