startup, not time since first call to GET-INTERNAL-REAL-TIME.
* improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
threads are not running after *SAVE-HOOKS* have run.
startup, not time since first call to GET-INTERNAL-REAL-TIME.
* improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
threads are not running after *SAVE-HOOKS* have run.