Merge CacioWeb

[Richard Bair]

>>> We also have a somewhat special backend which renders
>>> exclusively into a BufferedImage and can only process events generated
>>> by Robot, which is particularily useful for unit testing GUI
>>> applications without messing around with the user's desktop or without
>>> requiring graphics on a continuous integration server (extremely useful
>>> if you're into this GUI testing thingy).
>> 
>> That would be very cool. The SQE team uses robot / image testing heavily for FX and "taking over my computer" is one of the chief problems with it (the other being image tests are finicky).
> 
> 
> Cacio is a Java2D backend in the end, I don't know if it works with JavaFX, but it would be nice to give it a try, maybe you could help us on that? :)

Probably won't work straight away for JavaFX because we don't use AWT other than Java2D as a fallback. I've wanted to add a headless toolkit implementation to Glass though for just this use case.

Richard