Document ns-auto-hide-menu-bar

* doc/emacs/macos.texi (Customization options specific to Mac OS / GNUstep):
New subsection.

* etc/NEWS: Related markup.

doc/emacs/ChangeLog

 2012-02-04  Glenn Morris  <rgm@gnu.org>
 
+	* macos.texi (Customization options specific to Mac OS / GNUstep):
+	New subsection.
+
 	* display.texi (Colors): Mention list-colors-sort.
 
 	* files.texi (File Conveniences): Mention image animation.

doc/emacs/macos.texi

@@ -130,6 +130,18 @@ open the dragged files in the current frame use the following line:
 @end lisp
 
 
+@subsection Customization options specific to Mac OS / GNUstep
+
+The following customization options are specific to the Nextstep port.
+
+@table @code
+@item ns-auto-hide-menu-bar
+Non-nil means the menu-bar is hidden by default, but appears if you
+move the mouse pointer over it.  (Requires OS X 10.6 or later.)
+
+@end table
+
+
 @node Mac / GNUstep Events, GNUstep Support, Mac / GNUstep Customization, Mac OS / GNUstep
 @section Windowing System Events under Mac OS / GNUstep
 

etc/NEWS

@@ -1458,10 +1458,13 @@ and also when HOME is set to C:\ by default.
 +++
 ** New make target `dist' to create binary distribution for MS Windows.
 
-** Function `w32-default-color-map' is now obsolete.
+---
+** The Lisp function `w32-default-color-map' is now obsolete.
+(It is only used internally in the Emacs C code.)
 
-** On Nextstep/OSX, the menu bar can be hidden by customizing
-ns-auto-hide-menu-bar.
++++
+** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but
+reappear on mouse-over.  (Requires OS X 10.6 or later.)
 
 
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