* Cairo.xs
	* t/Cairo.t: Wrap cairo_get_scaled_font.

	* CairoSurface.xs
	* t/CairoSurface.t: Re-add the binding for cairo_surface_finish.
	It was orignally removed because its effect can also be achieved
	by destroying the surface or letting it go out of scope.  But
	Oleksandr Alex Protasenko convinced me that it's still a good idea
	to have it anyway, mainly for paginated surfaces like PDF and PS
	which defer rendering as long as they can.  With $surf->finish you
	can more clearly express what you're intending to do than with
	$surf = undef.

	* examples/png-streams.pl: Fix indention.

svn path=/trunk/; revision=88