In http://jogamp.org/deployment/webstart-next/nativewindow.jnlp, http://jogamp.org/deployment/webstart-next/jogl-all-noawt.jnlp, http://jogamp.org/deployment/webstart-next/jogl-awt.jnlp, some paths are wrong, nativewindow.x11.jar should be replaced by nativewindow.os.x11.jar.
Fixed, thx for pointing this out. The referenced git mainly targets the GDI relocation jogl -> nativewindow, so a new JAR for windows added to the atomic nativewindow jnlp ..