Review request for JDK-8012251 jjs should support -fx option

[Jim Laskey (Oracle)]

These changes allow a developer to use jjs -fx to launch a JavaFX application.  It affects no other features of jjs, meaning that you can mix and match other flags like scripting.  Ex:  I can write a shabang script to visualize diffs in my current project.

http://cr.openjdk.java.net/~jlaskey/8012251/webrev.01/index.html