Build: update Sizzle to 2.2.1

Ref jquery#2644 - `selector` module in Edge - Waiting for Sizzle update
Fixes jquery#2390

Author: markelog

external/sizzle/dist/sizzle.js

@@ -1,12 +1,12 @@
 /*!
- * Sizzle CSS Selector Engine v2.2.0
+ * Sizzle CSS Selector Engine v2.2.1
  * http://sizzlejs.com/
  *
  * Copyright jQuery Foundation and other contributors
  * Released under the MIT license
  * http://jquery.org/license
  *
- * Date: 2015-04-10
+ * Date: 2015-10-17
  */
 (function( window ) {
 
@@ -191,7 +191,7 @@ try {
 }
 
 function Sizzle( selector, context, results, seed ) {
-	var m, i, elem, nid, match, groups, newSelector,
+	var m, i, elem, nid, nidselect, match, groups, newSelector,
 		newContext = context && context.ownerDocument,
 
 		// nodeType defaults to 9, since context defaults to document
@@ -292,8 +292,9 @@ function Sizzle( selector, context, results, seed ) {
 					// Prefix every selector in the list
 					groups = tokenize( selector );
 					i = groups.length;
+					nidselect = ridentifier.test( nid ) ? "#" + nid : "[id='" + nid + "']";
 					while ( i-- ) {
-						groups[i] = "[id='" + nid + "'] " + toSelector( groups[i] );
+						groups[i] = nidselect + " " + toSelector( groups[i] );
 					}
 					newSelector = groups.join( "," );
 
@@ -380,7 +381,7 @@ function assert( fn ) {
  */
 function addHandle( attrs, handler ) {
 	var arr = attrs.split("|"),
-		i = attrs.length;
+		i = arr.length;
 
 	while ( i-- ) {
 		Expr.attrHandle[ arr[i] ] = handler;
@@ -503,10 +504,9 @@ setDocument = Sizzle.setDocument = function( node ) {
 	docElem = document.documentElement;
 	documentIsHTML = !isXML( document );
 
-	// Support: IE 9 - 11
+	// Support: IE 9-11, Edge
 	// Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936)
-	// Limit the fix to IE with document.documentMode and IE >=9 with document.defaultView
-	if ( document.documentMode && (parent = document.defaultView) && parent.top !== parent ) {
+	if ( (parent = document.defaultView) && parent.top !== parent ) {
 		// Support: IE 11
 		if ( parent.addEventListener ) {
 			parent.addEventListener( "unload", unloadHandler, false );