Update QUnit so IE will pass unit tests.

Normally we'd want to stay with an official release, but we need 1604af735af117fff3ee7589c611c04f665ac169 so that QUnit will not yell about errors encountered bduring `globalEval`.

diff --git a/test/qunit b/test/qunit
index 3f5e8b2123c66d4c9ab83b76f3785e799cd9b5d5..14f3acba86e0e0b71a154a8e5250addd4de81074 160000 (submodule)
--- a/test/qunit
+++ b/test/qunit
@@ -1 +1 @@
-Subproject commit 3f5e8b2123c66d4c9ab83b76f3785e799cd9b5d5
+Subproject commit 14f3acba86e0e0b71a154a8e5250addd4de81074