[RFR]: JDK-8196196: Headful tests should not be run in headless mode

[Mario Torre]

Hi all,

I would like to have a review for the following bug since it doesn't
apply cleanly:

https://bugs.openjdk.java.net/browse/JDK-8196196

I had to rework a number of them, for example a couple of tests don't
exist in JDK8u while other had test code changes that didn't apply to
8u. The new webrev is here:

http://cr.openjdk.java.net/~neugens/8196196/webrev.00/

Cheers,
Mario
-- 
Mario Torre
Associate Manager, Software Engineering
Red Hat GmbH <https://www.redhat.com>
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