how to initialize "tightinset" for new axes?

[Ben Abbott]

The tightinset property for axes is not being initialized properly for new 
axes.  I'm unfamiliar with how should be done .... but .... do we essentially 
need to add

        sync_positions ();

... to graphics.cc(axes::initialize)?

void
axes::initialize (const graphics_object& go)
{
  base_graphics_object::initialize (go);

  xinitialize (xproperties.get_title ());
  xinitialize (xproperties.get_xlabel ());
  xinitialize (xproperties.get_ylabel ());
  xinitialize (xproperties.get_zlabel ());
}

Since sync_positions() is out of the scope of axes::initialize,  how can that 
be done?

Ben