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/ui/Android.mk b/libs/ui/Android.mk
index 577dd4b..d44d2f9 100644
--- a/libs/ui/Android.mk
+++ b/libs/ui/Android.mk
@@ -5,9 +5,9 @@
 	BufferMapper.cpp \
 	Camera.cpp \
 	CameraParameters.cpp \
-	EGLNativeWindowSurface.cpp \
 	EventHub.cpp \
 	EventRecurrence.cpp \
+	FramebufferNativeWindow.cpp \
 	KeyLayoutMap.cpp \
 	KeyCharacterMap.cpp \
 	ICamera.cpp \