windmove.el: Mark unused code as obsolete

* lisp/windmove.el (windmove-window-distance-delta)
(windmove-coord-add, windmove-constrain-to-range)
(windmove-constrain-around-range, windmove-frame-edges)
(windmove-constrain-loc-for-movement)
(windmove-wrap-loc-for-movement, windmove-reference-loc)
(windmove-other-window-loc): Declare obsolete.
(windmove-find-other-window, windmove-do-window-select):
Doc fixes.

* etc/NEWS: Document it.

1 files changed, 7 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 20967d4d772..56127ba6018 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -750,6 +750,13 @@ that was in the specified direction.
 to the commands that swap the states of the selected window with the
 window in the specified direction.
 
+*** Windmove code no longer used is now obsolete.  That includes the
+user option 'windmove-window-distance-delta' and the functions
+'windmove-coord-add', 'windmove-constrain-to-range',
+'windmove-constrain-around-range', 'windmove-frame-edges',
+'windmove-constrain-loc-for-movement', 'windmove-wrap-loc-for-movement',
+'windmove-reference-loc' and 'windmove-other-window-loc'.
+
 ** Octave mode
 The mode is automatically enabled in files that start with the
 'function' keyword.