Ensure that webkit test runner's notifyDone is called

Some tests include js-test-post.js directly instead of calling
finishTest. Make sure that these tests also call notifyDone in 1.0.2 and
newer versions of the test suite, since waitUntilDone is always called.
Merge pull request #371 from NVIDIA/notify-done-fix2

Ensure that webkit test runner's notifyDone is called