Landing pull request 401. Nulling all elements created in support.js; Fixes #9471.

More Details:
 - jquery#401
 - http://bugs.jquery.com/ticket/9471

Author: rwaldron

src/support.js

@@ -245,7 +245,7 @@ jQuery.support = (function() {
 	}
 
 	// Null connected elements to avoid leaks in IE
-	marginDiv = div = input = null;
+	testElement = fragment = select = opt = body = marginDiv = div = input = null;
 
 	return support;
 })();