Update on enabling JavaFX to work with OpenJDK builds

[Kevin Rushforth]

One of the big challenges in running JavaFX with OpenJDK builds is that 
developers need to build OpenJDK locally themselves and include the 
JavaFX bits produced by a locally-built OpenJFX build.

In an earlier email with the subject "javafx might not be present" [1], 
I mentioned our intention to make it easier for OpenJFX to be built, 
tested, and run with OpenJDK builds that don't already contain javafx.* 
modules. This will pave the way to allow a set of pre-built javafx 
modules to be distributed that will run on top of a pre-built OpenJDK.

By way of update, this work is underway and can be tracked via the 
following two JBS issues:

1. Removing internal dependencies:

JDK-8195798 [2] : Address dependencies in javafx.* modules on internal 
APIs of core modules

The above is an umbrella task that points to several linked blocking 
bugs. All of these bugs are in progress and a few are already done 
(e.g., removing jdk.internal.Unsafe from Marlin).


2. Enabling the building, testing, and distribution as a set of separate 
modules

JDK-8198329 [3] : Support FX build / test using JDK that doesn't include 
javafx.* modules

This one depends on the first two, but can be started in parallel, so I 
plan to start on it in the next few days.


Let me know if you have any questions on this.

-- Kevin

[1] 
http://mail.openjdk.java.net/pipermail/openjfx-dev/2018-February/021447.html

[2] https://bugs.openjdk.java.net/browse/JDK-8195798

[3] https://bugs.openjdk.java.net/browse/JDK-8198329