[cairo] New API: cairo_ps_surface_set_size

[Emmanuel Pacaud]

>The patch below (which has already been pushed out to the central tree)
>adds new API:

>cairo_public void
>cairo_ps_surface_set_size (cairo_surface_t      *abstract_surface,
>			   double                width_in_points, >double               
>			   height_in_points);

Why not add a generic API (cairo_surface_set_size) ?

It seems this could be useful for pdf surfaces, and even SVG ones.

	Emmanuel.