(Credit: © Glyndebourne Productions Ltd. Photo: Bill Cooper) Glyndebourne’s final production of this year’s festival is a semi-staged realization of Richard Wagner’s “Tristan und Isolde,” conceived by Daniel Dooner and featuring Glyndebourne music director Robin Ticciati in the pit, accompanied by their resident orchestra the London Philharmonic Orchestra. It’s a production that boldly sets out several role debuts, in Simon {…}