NativeWindow: Add accessor interfaces NativeSurfaceHolder and NativeWindowHolder

- NativeSurfaceHolder interface allows access to it's implementation's NativeSurface reference.
- NativeWindowHolder interface allows access to it's implementation's NativeWindow reference.

Implement or extend interface w/ these accessors whereever it seems fit:
  - NEWT Window
  - GLDrawable

These accessors allow lower layers to retrieve the NativeSurface/Window instance
w/o knowledge of the 'upper' frameworks, ie. NativeWindow/JOGL or JOGL/NEWT.

Commited in followups (due to mixed semantical changes in those files):
  - JAWTWindow
  - NewtCanvasAWT
  - Some NEWT impl.

1 files changed, 2 insertions, 3 deletions

diff --git a/src/jogl/classes/javax/media/opengl/GLDrawable.java b/src/jogl/classes/javax/media/opengl/GLDrawable.java
index f4cd77059..e2048b288 100644
--- a/src/jogl/classes/javax/media/opengl/GLDrawable.java
+++ b/src/jogl/classes/javax/media/opengl/GLDrawable.java
@@ -42,6 +42,7 @@ package javax.media.opengl;
 
 import javax.media.nativewindow.AbstractGraphicsConfiguration;
 import javax.media.nativewindow.NativeSurface;
+import javax.media.nativewindow.NativeSurfaceHolder;
 
 
 /** An abstraction for an OpenGL rendering target. A GLDrawable's
@@ -50,7 +51,7 @@ import javax.media.nativewindow.NativeSurface;
     create an OpenGL context, but all implementations of {@link
     GLAutoDrawable} do so upon creation. */
 
-public interface GLDrawable {
+public interface GLDrawable extends NativeSurfaceHolder {
   /**
    * Creates a new context for drawing to this drawable that will
    * optionally share display lists and other server-side OpenGL
@@ -158,8 +159,6 @@ public interface GLDrawable {
     */
   public GLProfile getGLProfile();
 
-  public NativeSurface getNativeSurface();
-
   /** 
    * This is the GL/Windowing drawable handle.<br>
    * It is usually the {@link javax.media.nativewindow.NativeSurface#getSurfaceHandle()},