update surfaceflinger, libui and libagl to the new gralloc api

- Currently the lock/unlock path is naive and is done for each drawing operation (glDrawElements and glDrawArrays). this should be improved eventually.
- factor all the lock/unlock code in SurfaceBuffer.
- fixed "showupdate" so it works even when we don't have preserving eglSwapBuffers().
- improved the situation with the dirty-region and fixed a problem that caused GL apps to not update.
- make use of LightRefBase() where needed, instead of duplicating its implementation
- add LightRefBase::getStrongCount()
- renamed EGLNativeWindowSurface.cpp to FramebufferNativeWindow.cpp

- disabled copybits test, since it clashes with the new gralloc api

- Camera/Video will be fixed later when we rework the overlay apis
diff --git a/libs/surfaceflinger/LayerBase.h b/libs/surfaceflinger/LayerBase.h
index c177c2a..509dedd 100644
--- a/libs/surfaceflinger/LayerBase.h
+++ b/libs/surfaceflinger/LayerBase.h
@@ -40,6 +40,7 @@
 class GraphicPlane;
 class Client;
 class SurfaceBuffer;
+class Buffer;
 
 // ---------------------------------------------------------------------------
 
@@ -239,7 +240,7 @@
     
           void drawWithOpenGL(const Region& clip,
                   GLint textureName,
-                  const GGLSurface& surface,
+                  const sp<const Buffer>& buffer,
                   int transform = 0) const;
 
           void clearWithOpenGL(const Region& clip) const;