$HOME/.bashrc provides TZ for *all* processes, resulting in proper date for Build_Log.log_date in remote_build_history via ssh (see also fe8f8f88a1d7);

uniform Isabelle settings -- avoid picking up different JAVA_HOME;

separate ISABELLE_HOME_USER (with its etc/settings);

explicit timezone for the sake of lxbroy10;

force fresh build;

basic setup for Isabelle cronjob;