Use global overlay for 'Exit/Quit' menuitem, requiring moving of overlay includes, b=54584, r=ducarroz, sr=syd

editor/ui/composer/content/TextEditorAppShell.xul

@@ -24,9 +24,10 @@
   -->
 
 <?xml-stylesheet href="chrome://editor/skin/editor.css" type="text/css"?> 
-<?xul-overlay href="chrome://editor/content/editorOverlay.xul"?>
+<?xul-overlay href="chrome://global/content/globalOverlay.xul"?>
 <?xul-overlay href="chrome://communicator/content/utilityOverlay.xul"?>
 <?xul-overlay href="chrome://communicator/content/tasksOverlay.xul"?>
+<?xul-overlay href="chrome://editor/content/editorOverlay.xul"?>
 
 <!DOCTYPE window SYSTEM "chrome://editor/locale/editor.dtd"> 
 

editor/ui/composer/content/editorOverlay.xul

@@ -305,6 +305,7 @@
       <menuitem accesskey="&fileprintsetup.accesskey;" observes="cmd_printSetup" />
       <menuitem accesskey="&fileprint.accesskey;"      observes="cmd_print" value="&printCmd.label;"/>
       <menuseparator/>
+      <!-- The Exit/Quit item is merged from platformGlobalOverlay.xul -->
     </menupopup>
   </menu>