Core: Move $.ui.ie into its own module

Ref #9647

ui/core.js

@@ -25,6 +25,7 @@
 			"./escape-selector",
 			"./focusable",
 			"./form",
+			"./ie",
 			"./version"
 		], factory );
 	} else {
@@ -238,9 +239,6 @@ if ( $.fn.jquery.substring( 0, 3 ) === "1.7" ) {
 	};
 }
 
-// deprecated
-$.ui.ie = !!/msie [\w.]+/.exec( navigator.userAgent.toLowerCase() );
-
 // $.ui.plugin is deprecated. Use $.widget() extensions instead.
 $.ui.plugin = {
 	add: function( module, option, set ) {

ui/ie.js

@@ -0,0 +1,15 @@
+( function( factory ) {
+	if ( typeof define === "function" && define.amd ) {
+
+		// AMD. Register as an anonymous module.
+		define( [ "jquery", "./version" ], factory );
+	} else {
+
+		// Browser globals
+		factory( jQuery );
+	}
+} ( function( $ ) {
+
+// This file is deprecated
+return $.ui.ie = !!/msie [\w.]+/.exec( navigator.userAgent.toLowerCase() );
+} ) );

ui/mouse.js

@@ -18,6 +18,7 @@
 		// AMD. Register as an anonymous module.
 		define([
 			"jquery",
+			"./ie",
 			"./version",
 			"./widget"
 		], factory );

ui/sortable.js

@@ -22,6 +22,7 @@
 			"jquery",
 			"./core",
 			"./data",
+			"./ie",
 			"./mouse",
 			"./version",
 			"./widget"