Update to QUnit 1.9.0

diff --git a/test/qunit b/test/qunit
index 8a7fc96381b14792ff1c380ffa6682396658a4c2..c0d1349910af756ae453f82fe660b63e5484554d 160000 (submodule)
--- a/test/qunit
+++ b/test/qunit
@@ -1 +1 @@
-Subproject commit 8a7fc96381b14792ff1c380ffa6682396658a4c2
+Subproject commit c0d1349910af756ae453f82fe660b63e5484554d