Tinariwen played Friday night at the 9:30 Club. Photo from artist website. The Tinariwen backstory is the stuff of legends. Tuareg refugees from Mali living across the border in the desert of Libya, they were recruited to serve in Muammar Ghaddafi’s army of the Sahara. They met during military training, and began working out a blend of North and West African music through jams of traditional songs and tunes about the plight of the…