Fix concurrency bug of GLProfile initialization ; Fix SharedResourceRunner 'dead' thread (Applets)

GLDrawableFactory:
  - clarify: public getWasSharedContextCreated(..) -> protected createSharedResource(..)
  - add: getSharesResourceThread()

GLProfile:
  - proper locking of initSingletion(..) path:
    - Use RecursiveThreadGroupLock and add/remove GLDrawableFactory's sharesResourceThread
      while creating it's the sharedResource.
      This simplifies and fixes GLProfile's locking code.

  - Fix and simplify initSingleton(boolean) API doc - mark it deprecated.

  - Add initSingleton() for controlled initialization only, pairing w/ shutdown(..)

Remove initSingleton(boolean) calls in code and test!

+++

Fix SharedResourceRunner 'dead' thread (Applets)
  In Applets, stopping an Applet makes the browser Java plugin interrupting
  and killing all related threads, including our SharedResourceRunner thread.

  - Validate whether the shared resource thread is alive

  - Catch interruption in shared resource thread and assume it's a kill signal

  - releaseSharedResource: clear devicesTried set

2 files changed, 2 insertions, 2 deletions

diff --git a/src/newt/classes/com/jogamp/newt/awt/applet/JOGLNewtApplet1Run.java b/src/newt/classes/com/jogamp/newt/awt/applet/JOGLNewtApplet1Run.java
index ebcc0dd27..105f8369a 100755
--- a/src/newt/classes/com/jogamp/newt/awt/applet/JOGLNewtApplet1Run.java
+++ b/src/newt/classes/com/jogamp/newt/awt/applet/JOGLNewtApplet1Run.java
@@ -170,7 +170,6 @@ public class JOGLNewtApplet1Run extends Applet {
                                       glTrace);
 
         try {
-            GLProfile.initSingleton(false);
             GLCapabilities caps = new GLCapabilities(GLProfile.get(glProfileName));
             caps.setAlphaBits(glAlphaBits);
             if(0<glNumMultisampleBuffer) {
@@ -271,7 +270,6 @@ public class JOGLNewtApplet1Run extends Applet {
         }
         base.destroy(); // destroy glWindow unrecoverable
         base=null;
-        GLProfile.shutdown(GLProfile.ShutdownType.SHARED_ONLY);
         if(DEBUG) {
             System.err.println("JOGLNewtApplet1Run.destroy() END");
         }
diff --git a/src/newt/classes/com/jogamp/newt/awt/applet/JOGLNewtAppletBase.java b/src/newt/classes/com/jogamp/newt/awt/applet/JOGLNewtAppletBase.java
index 6b135976b..67da50210 100755
--- a/src/newt/classes/com/jogamp/newt/awt/applet/JOGLNewtAppletBase.java
+++ b/src/newt/classes/com/jogamp/newt/awt/applet/JOGLNewtAppletBase.java
@@ -43,6 +43,7 @@ import jogamp.newt.Debug;
 import com.jogamp.newt.event.KeyEvent;
 import com.jogamp.newt.event.KeyListener;
 import com.jogamp.newt.event.MouseListener;
+import com.jogamp.newt.event.WindowEvent;
 import com.jogamp.newt.event.WindowListener;
 import com.jogamp.newt.opengl.GLWindow;
 import com.jogamp.opengl.util.Animator;
@@ -199,6 +200,7 @@ public class JOGLNewtAppletBase implements KeyListener, GLEventListener {
     public void start() {
         if(isValid) {
             glWindow.setVisible(true);
+            glWindow.sendWindowEvent(WindowEvent.EVENT_WINDOW_RESIZED);
             glAnimator.start();
             awtParent = glWindow.getParent();
         }