[cairo] drawable parameter to _cairo_surface_create_similar()

[David Reveman]

On Tue, 2005-02-01 at 18:37 -0500, Owen Taylor wrote:
> Does anybody know what this is for? (I'm thinking "should it be
> possible to draw to the surface", but what's the point of creating
> a surface you can't draw to?. Can we remove it?

With drawable=0, you would create a surface that you can do set_image to
it and use as a source. Glitz backend used that earlier, but not
anymore. Remove it.

-David