Now all modules are in core modules folder

modules/ckeditor/plugins/linktomenu/plugin.js

@@ -0,0 +1,56 @@
+/*
+Copyright (c) 2003-2013, CKSource - Frederico Knabben. All rights reserved.
+For licensing, see LICENSE.html or http://ckeditor.com/license
+*/
+CKEDITOR.plugins.add( 'linktomenu',
+{
+	init : function( editor )
+	{
+		// Add the link and unlink buttons.
+		editor.addCommand( 'linktomenu', new CKEDITOR.dialogCommand( 'linktomenu' ) );
+		editor.ui.addButton( 'LinkToMenu',
+			{
+				label : 'Link to menu',
+				icon : this.path + 'images/linktomenu.gif',
+				command : 'linktomenu'
+			} );
+		CKEDITOR.dialog.add( 'linktomenu', this.path + 'dialogs/link.js' );
+
+		// If the "menu" plugin is loaded, register the menu items.
+		if ( editor.addMenuItems )
+		{
+			editor.addMenuItems(
+				{
+					linktomenu :
+					{
+						label : 'Link to menu',
+						command : 'linktomenu',
+						group : 'linktomenu',
+						order : 1
+					}
+				});
+		}
+
+		// If the "contextmenu" plugin is loaded, register the listeners.
+		if ( editor.contextMenu )
+		{
+			editor.contextMenu.addListener( function( element, selection )
+				{
+					if ( !element )
+						return null;
+
+					var isAnchor = ( element.is( 'img' ) && element.getAttribute( '_cke_real_element_type' ) == 'anchor' );
+
+					if ( !isAnchor )
+					{
+						if ( !( element = element.getAscendant( 'a', true ) ) )
+							return null;
+
+						isAnchor = ( element.getAttribute( 'name' ) && !element.getAttribute( 'href' ) );
+					}
+
+					return { linktomenu : CKEDITOR.TRISTATE_OFF };
+				});
+		}
+	}
+} );