* lisp/desktop.el (desktop-auto-save-timeout): Change default to

* lisp/desktop.el (desktop-auto-save-timeout): Change default to
`auto-save-timeout'.  Doc fix.
(desktop-save): Skip the timestamp in desktop-saved-frameset
when checking for auto-save changes.
(desktop-auto-save): Don't call desktop-auto-save-set-timer since
`desktop-auto-save' is called repeatedly by the idle timer.
(desktop-auto-save-set-timer): Replace `run-with-timer' with
`run-with-idle-timer' and a non-nil arg REPEAT.  Doc fix.

Fixes: debbugs:15331