Remove clone-number support. Provide clone-of parameter in window states.

* window.h (window): Remove clone_number slot.
* window.c (Fwindow_clone_number, Fset_window_clone_number):
Remove.
(make_parent_window, make_window, saved_window)
(Fset_window_configuration, save_window_save): Don't deal with
clone numbers.
* buffer.c (Qclone_number): Remove declaration.
(sort_overlays, overlay_strings): Don't deal with clone numbers.

* window.el (window-state-get-1): Don't assign clone numbers.
Add clone-of item to list of window parameters.
(window-state-put-2): Don't process clone numbers.
(display-buffer-alist): Fix doc-string.

1 files changed, 0 insertions, 4 deletions

diff --git a/src/window.h b/src/window.h
index c3f59e4b116..485734e907e 100644
--- a/src/window.h
+++ b/src/window.h
@@ -165,10 +165,6 @@ struct window
     /* Unique number of window assigned when it was created.  */
     Lisp_Object sequence_number;
 
-    /* Sequence number of window this window was cloned from.  Identic
-       to sequence number if window was not cloned.  */
-    Lisp_Object clone_number;
-
     /* No permanent meaning; used by save-window-excursion's
        bookkeeping.  */
     Lisp_Object temslot;