src/Pure/install_pp.ML

- 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

(*  Title:      Pure/install_pp.ML
    ID:         $Id$

Set up automatic toplevel pretty printing.
*)

install_pp (make_pp ["Theory", "theory"] pprint_theory);
install_pp (make_pp ["Thm", "thm"] pprint_thm);
install_pp (make_pp ["Thm", "cterm"] pprint_cterm);
install_pp (make_pp ["Thm", "ctyp"] pprint_ctyp);
install_pp (make_pp ["Sign", "sg"] Sign.pprint_sg);
install_pp (make_pp ["Syntax", "ast"] Syntax.pprint_ast);
install_pp (make_pp ["typ"] Syntax.simple_pprint_typ);