AWTWindowClosingProtocol: Hold Window reference impl. is listening to to properly removeClosingListener() (and replace boolean state)
JOGLNewtAppletBase's windowDestroyNotify(): Double check 'awtParent' before reparenting 'back to parent'
JOGLNewtApplet1Run: Perform AWT Operations on AWT-EDT ; Remove redundant explicit call to reparentWindow(null) @ destroy
JOGLNewtAppletBase's add/remove 'reparentHome WindowListener' at start()/stop()
Workaround Bug 910 (IcedTea-Web): NewtCanvasAWT shall postpone JAWTWindow destruction if removeNotify() is called from non AWT-EDT