Case C-169/08: Judgment of the Court (Grand Chamber) of 17 November 2009 (reference for a preliminary ruling from the Corte costituzionale (Italy)) — Presidente del Consiglio dei Ministri v Regione autonoma della Sardegna (Freedom to provide services — Article 49 EC — State aid — Article 87 EC — Regional legislation establishing a tax on stopovers for tourist purposes by aircraft used for the private transport of persons, or by recreational craft, to be imposed only on operators whose tax domicile is outside the territory of that region)