Document latest changes in make_lispy_position.

 doc/lispref/commands.texi (Click Events): Update contents of click event's
 position list due to last changes in make_lispy_position.

  etc/NEWS: Mention the incompatible change.

doc/lispref/ChangeLog

+2014-06-07  Eli Zaretskii  <eliz@gnu.org>
+
+	* commands.texi (Click Events): Update contents of click event's
+	position list due to last changes in make_lispy_position.
+
 2014-06-02  Glenn Morris  <rgm@gnu.org>
 
 	* text.texi (Buffer Contents):

doc/lispref/commands.texi

@@ -1396,8 +1396,9 @@ The position in the string where the click occurred.
 @item @var{text-pos}
 For clicks on a marginal area or on a fringe, this is the buffer
 position of the first visible character in the corresponding line in
-the window.  For other events, it is the current buffer position in
-the window.
+the window.  For clicks on the mode line or the header line, this is
+@code{nil}.  For other events, it is the buffer position closest to
+the click.
 
 @item @var{col}, @var{row}
 These are the actual column and row coordinate numbers of the glyph

etc/NEWS

@@ -132,6 +132,12 @@ active region handling.
 
 ** cl-the now asserts that its argument is of the given type.
 
++++
+** Mouse click events on mode line or header line no longer include
+any reference to a buffer position.  The 6th member of the mouse
+position list returned for such events is now nil.
+
+
 
 * Lisp Changes in Emacs 24.5