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diff --git a/lisp/ChangeLog b/lisp/ChangeLog
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--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,31 @@
+2014-11-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+        Improve time stamp handling, and be more consistent about it.
+        This implements a suggestion made in:
+        http://lists.gnu.org/archive/html/emacs-devel/2014-10/msg00587.html
+        Among other things, this means timer.el no longer needs to
+        autoload the time-date module.
+        * allout-widgets.el (allout-elapsed-time-seconds): Doc fix.
+        * arc-mode.el (archive-ar-summarize):
+        * calendar/time-date.el (seconds-to-time, days-to-time, time-since):
+        * emacs-lisp/timer.el (timer-relative-time, timer-event-handler)
+        (run-at-time, with-timeout-suspend, with-timeout-unsuspend):
+        * net/tramp.el (tramp-time-less-p, tramp-time-subtract):
+        * proced.el (proced-time-lessp):
+        * timezone.el (timezone-time-from-absolute):
+        * type-break.el (type-break-schedule, type-break-time-sum):
+        Simplify by using new functionality.
+        * calendar/cal-dst.el (calendar-next-time-zone-transition):
+        Do not return time values in obsolete and undocumented (HI . LO)
+        format; use (HI LO) instead.
+        * calendar/time-date.el (with-decoded-time-value):
+        Treat 'nil' as current time.  This is mostly for XEmacs.
+        (encode-time-value, with-decoded-time-value): Obsolete.
+        (time-add, time-subtract, time-less-p): Use no-op autoloads, for
+        XEmacs.  Define only if XEmacs, as they're now C builtins in Emacs.
+        * ldefs-boot.el: Update to match new time-date.el
+        * proced.el: Do not require time-date.
+
 2014-11-16  Lars Magne Ingebrigtsen  <larsi@gnus.org>
 
         * net/eww.el (eww-mode): Make the buffer read-only.