merged

update NEWS;

update cygwin near 3.5.1-1, also see https://cygwin.com/pipermail/cygwin-announce/2024-February/011524.html and https://cygwin.com/pipermail/cygwin-announce/2024-February/011611.html

drop unused Task.info field;

proper guard_time (amending 752806151432);

proper dynamic access (amending c3f07c950116);

more robust, notably for remote process (via SSH);

prefer dynamic objects, following a5fda30edae2;

proper dynamic access (amending 52b5c7c8e6d9);

clarified signature: incorporate guard into Logger;

merged

added lemmas rtranclp_ident_if_reflp_and_transp and tranclp_ident_if_transp

Moving valuable library material from Martingales into the distribution

clarified signature; sleep unconditionally: avoid aggressive database access;

clarified module signature and state;

tuned messages;

omit somewhat pointless message, following b7187d4cdf68;

more robust handling of uninitialized value, notably Build_Process.progress;

tuned

partially revert f1f08ca40d96: benchmark data needs to be present before timing data is loaded;

clarified module signature and state;

tuned signature: more protected operations;

database performance tuning: just one synchronized_database for main loop body;

tuned;

more robust: assume that database is exclusive for this Progress instance --- always close on exit (see also bf377e10ff3b);

more robust: imitate Isabelle/ML operation more closely (after 26a43785590b); logical_cores is e.g. relevant for server-arm.sketis.net, where /proc/cpuinfo looks quite different;

tuned;

tuned proof: avoid z3 to make it work on arm64-linux;

official support for arm64-linux, despite a few missing tools;

discontinue unstable z3-4.4.1 for arm64-linux from Debian (in contrast to 796ae338eb9d and 87718883c8b9);