“Voir Dire,” the title of the new album from rapper Earl Sweatshirt and producer the Alchemist, translates from French as “speak the truth” — a concept that’s all too familiar to its creators. “He was gifted from an early age.” Now a few months removed from the album’s 10-year anniversary celebration concert at the Novo, Sweatshirt, born Thebe Kgositsile, has …