OPERA REVIEWS: All 4 Productions Rolled Out At Glimmerglass Festival Cast of International Excellence In ‘Ariadne’ By ROBERT MOYNIHAN • allotsego.com Richard Strauss’s “Ariadne auf Naxos,” auf Upstate German humor? Supposedly, it doesn’t exist outside Klink’s Stalag on aging TV. An oddity of reputation is that Germany, after two murderous conflagrations, may even now be wrongly cast. Arecent book claims that most “higher things” in the U.S. came from France. Not so. Most of our higher musical culture came from…