NativeWindowFactory: Add Support for creating a platform agnostic wrapped AbstractGraphicsDevice/NativeWindow
NewtFactory: Fix createWindow(..) ctor w/ given native window handle (use displayConnection string and screen-idx)
NEWT: Add Support for AWT-Less Applet3

- Adding 'plugin3-public' jar and sources for Applet3 support, copied from icedtea-web3

- Added com.jogamp.newt.util.applet.JOGLNewtApplet3Run capable to run Applet3