[9] API review request: 8090585: Provide an official API to start the JavaFX platform

[Kevin Rushforth]

Jonathan and all,

Please review the following new API proposal to add the ability to 
explicitly start the FX runtime.

https://bugs.openjdk.java.net/browse/JDK-8090585
http://cr.openjdk.java.net/~kcr/8090585/webrev.00/

-- Kevin