[11] Review request: JDK-8189689: JavaFX build fails with gcc 6

[Laurent Bourgès]

Kevin,

Please review the following webrev that fixes compilation with gcc 6, that
was initiated on github by Emmanuel Bourg (@ebourg) in PR #11 and #16

https://bugs.openjdk.java.net/browse/JDK-8189689
http://cr.openjdk.java.net/~lbourges/fx/fx-8189689.0/

Thanks,
Laurent