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/opengl/tests/copybits/Android.mk b/opengl/tests/copybits/Android.mk
index d5ded42..2876a1e 100644
--- a/opengl/tests/copybits/Android.mk
+++ b/opengl/tests/copybits/Android.mk
@@ -14,5 +14,5 @@
 
 LOCAL_MODULE_TAGS := tests
 
-include $(BUILD_EXECUTABLE)
+##include $(BUILD_EXECUTABLE)