Concurrent message exchange via mailbox -- with unbounded queueing.

added Concurrent/mailbox.ML;

reorganize subsections

rename INF_drop_prefix to INFM_drop_prefix

add lemma power_Suc2; generalize power_minus from class comm_ring_1 to ring_1

move diff_add_cancel, add_diff_cancel from class ab_group_add to group_add

tuned signature;

added General/queue.ML;

Efficient queues.

moved Multithreading.task/schedule to Concurrent/schedule.ML

multithreading.ML provides dummy thread structures;

moved Multithreading.task/schedule to Concurrent/schedule.ML;

provide dummy thread structures, including proper Thread.getLocal/setLocal; moved task/schedule to Concurrent/schedule.ML;

Thread.getLocal/setLocal;

Scheduling -- multiple threads working on a queue of tasks. formerly in ML-Systems/multithreading_polyml.ML; simplified -- less tracing; use regular Isabelle/ML functions instead of NJ stuff;

added Concurrent/schedule.ML;

update tags

use /home/isabelle/mercurial/bin/hg wrapper;

exclude large .mov files;

simplified add_axiom: no hyps;

discontinued local axioms -- too difficult to implement, too easy to produce nonsense;

axiomatization is now global-only;

added const_decl;

simplified specify_const: canonical args, global deps;

declare_const: Name.binding, store/report position;

Sign.declare_const: Name.binding;

removed ex/Puzzle

added qualified: string -> binding -> binding;

Name.qualified;

theorem dependency hook: check previous state;

added pos_of;

-> AFP

simplified Toplevel.add_hook: cover successful transactions only;

retired Ben Porter's DenumRat in favour of the shorter proof in Real/Rational.thy

made SML/NJ happy;

refined theorem dependency output: previous state needs to contain a theory (not empty toplevel); new_thms_deps: explicity theory values;

* Generic Toplevel.add_hook interface allows to analyze the result of transactions (including failed ones). For example, see src/Pure/ProofGeneral/proof_general_pgip.ML for theorem dependency output of transactions resulting in a new theory state.

Replaced Library/NatPair by Nat_Int_Bij.

added new_thms_deps (operates on global facts, some name_hint approximation); theorem dependency output: Toplevel.add_hook, ProofGeneralPgip.new_thms_deps;

theorem dependency output: Toplevel.add_hook, ProofGeneralPgip.new_thms_deps;

added add_hook interface for post-transition hooks;

tuned;

ProofDisplay.print_results;

no pervasive bindings; removed theory_results and related hook; print_results: ignore empty/internal kind -- like former theory_results;

Streamlined parts of Complex/ex/DenumRat and AFP/Integration/Rats and distributed them over Real/ (to do with bijections and density). Library/NatPair became Nat_Int_Bij and made that part of Main.

distributed literal code generation out of central infrastructure

* Result facts now refer to the *full* internal name;

* Name bindings in higher specification mechanisms;

pretty_fact/results: display base only, since results now come with full names (note that Facts.extern is not really well-defined unless we present the real target context);

updated generated file;

Interpretation commands no longer accept interpretation attributes.

type Attrib.binding abbreviates Name.binding without attributes; Attrib.no_binding refers to Name.no_binding;

explicit type Name.binding for higher-specification elements;

explicit type Name.binding for higher-specification elements; report local_fact_decl, fixed_decl; simplified ProofContext.inferred_param;

explicit type Name.binding for higher-specification elements; added binding, parbinding;

explicit type Name.binding for higher-specification elements; simplified ProofContext.inferred_param;

explicit type Name.binding for higher-specification elements; name/var morphism operates on Name.binding;

added binding; thm_name/opt_thm_name: Name.binding;

added fixed_decl, fact_decl, local_fact_decl;

name_thm etc.: pass position; note_thms etc.: Name.binding, report fact_decl;