[macosx] AppleScriptEngine.jar MUST call java.awt.Toolkit.getDefaultToolkit() lazily

This call is preventing headless apps that use ScriptEngine from running. The way the static init is structured currently, the AWT Toolkit is initialized on registration as a script engine. The AWT Toolkit init should not take place unless the app uses the AppleScriptEngine.

The following example will cause a menu bar to appear on a headless app (when it should not.)


import javax.script.ScriptEngineManager;

public class EngineTest {
    public static void main(String[] args) throws Exception {
        new ScriptEngineManager();
        Thread.sleep(100000);
    }
}