[11] Review request: 8195801: Replace jdk.internal.misc.Unsafe with sun.misc.Unsafe in MarlinFX

[Kevin Rushforth]

Hi Laurent and Phil,

Please review the following fix:

https://bugs.openjdk.java.net/browse/JDK-8195801
http://cr.openjdk.java.net/~kcr/8195801/webrev.00/

This removes the dependency on the internal jdk.internal.misc.Unsafe 
class, and goes back to using sun.misc.Unsafe, which is still available 
publicly as one of the critical APIs identified in JEP 260 [1].

This fix is one part of a larger effort to reduce the usage of internal 
APIs [2].

-- Kevin

[1] http://openjdk.java.net/jeps/260
[2] https://bugs.openjdk.java.net/browse/JDK-8195798