macosx CALayer Display.create() / .setParent() / setFullscreen()

http://hg.openjdk.java.net/jdk8/awt/jdk/rev/65d874d16d59
JAWT native CALayer not positioned over Canvas
(Reviewed-by: art, anthony)
Initialy, the layer bounds have the Y coord originating not as
expected. java7 only seems to provoke that issue (java6 was ok, java8 would provide a fix..). need to check both window and fullscreen modes.
by broumbroum