In order to increase the robustness of tests, including the ability to run on a wider array of systems, we should increase the timeout values used in various test.

In particular, the following should be evaluated and increased where it makes sense to do so:

1. Util.TIMEOUT -- currently set to 5 seconds, this should be increased to 10 seconds

This value is used both for tests that launch the FX runtime (using Application::lauch or Platform::startup) and as the timeout for the runnables passed to Util::runAndWait


2. Individual test timeout values -- this varies, but any test with a timeout value < 15 seconds should increase it to 15 seconds:

    @Test(timeout=15000)


There are related concerns regarding individual sleep values, as tracked by JDK-8176884 and (maybe) JDK-8196614, but those are beyond the scope of this bug.