more robust TimeLimit: make double sure that watchdog has terminated and interrupts received during uninterruptible state are propagated (NB: Thread.testInterrupt requires InterruptSynch in Poly/ML 5.4.0 or earlier);

more tracing information via Par_List.map_name;

clarified bootstrapping of structure TimeLimit;

more scalable collections of tasks, notably for totality of known group members; tuned;

tuned signature; tuned;

merged

prefer p2e before e2p; use measure_unique_Int_stable_vimage;