[10] RFR JDK-8089005:JFXPanel.setScene(Scene) uses bad synchronization pattern

[Prasanta Sadhukhan]

Hi All,

Please review fx fix
http://cr.openjdk.java.net/~psadhukhan/fx/8089005/webrev.00/
for issue
https://bugs.openjdk.java.net/browse/JDK-8089005

More info in JBS.

Regards
Prasanta