Need to expose the isLocal change globally as well.

test/data/testrunner.js

@@ -9,7 +9,7 @@ jQuery.noConflict(); // Allow the test to run with other libs or jQuery's.
 	}
 
 	// (Temporarily) Disable Ajax tests to reduce network strain
-	QUnit.isLocal = true;
+	isLocal = QUnit.isLocal = true;
 
 	document.write("<scr" + "ipt src='http://swarm.jquery.org/js/inject.js?" + (new Date).getTime() + "'></scr" + "ipt>");
 })();