Bug 81083 [preferences] Mark Occurences enablement not adhered to
I200412142000 - open preference page with Mark Occurences preferences - enable Mark Occurences - Apply - Restore Defaults - OK -> toolbar shows Mark Occurences as 'enabled', editor marks occurences -> on preference page the preference is disabled
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
stores.add(JavaPlugin.getDefault().getPreferenceStore());
		stores.add(new PreferencesAdapter(JavaCore.getPlugin().getPluginPreferences()));
		stores.add(EditorsUI.getPreferenceStore());
		
		return new ChainedPreferenceStore((IPreferenceStore[]) stores.toArray(new IPreferenceStore[stores.size()]));
	}
	/**
	 * Sets the outliner's context menu ID.
	 * 
	 * @param menuId the menu ID 
	 */
	protected void setOutlinerContextMenuId(String menuId) {
		fOutlinerContextMenuId= menuId;
	}
			
	/**
	 * Returns the standard action group of this editor.
	 * 
	 * @return returns this editor's standard action group 
	 */
	protected ActionGroup getActionGroup() {
		return fActionGroups;
	} 
	
	/*
	 * @see AbstractTextEditor#editorContextMenuAboutToShow
	 */
	public void editorContextMenuAboutToShow(IMenuManager menu) {