Allow creation of loaddefs files without timestamps.

* lisp/emacs-lisp/autoload.el (autoload-timestamps): New variable.
(autoload-generate-file-autoloads, update-directory-autoloads):
If autoload-timestamps is nil, write "t" instead of file timestamp.
(autoload-find-destination, update-directory-autoloads):
If timestamp is "t", use the modtime of the output file instead.

; * etc/NEWS: Mention this.

1 files changed, 3 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 232f4970cc9..8907f7ad453 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -68,6 +68,9 @@ in these situations.
 
 * Lisp Changes in Emacs 25.2
 
+** Autoload files can be generated without timestamps,
+by setting `autoload-timestamps' to nil.
+
 
 * Changes in Emacs 25.2 on Non-Free Operating Systems