0a3682a566* src/timefns.c: Add comments.b16ba4041d; lisp/emacs-lisp/seq.el: Explain why we don't use cl-lib ...3cbf4cb796Eliminate use of cl-concatenate in 'seq' package363d927086Fix bug with JIT stealth timers818333c85a* doc/lispref/os.texi (time-subtract): Doc fix.