LIKE AN ARROWIt's hard to call the Georgia quartet Blackberry Smoke Southern Rock revivalists. Rather, they work in a tradition carved out by Lynyrd Skynyrd and the Allman Brothers Band back in the '70s. Gregg Allman sings on "Free on the Wing," the closing track on Like an Arrow, the band's first album for Thirty Tigers, and Skynyrd is often used as a comparison point for the band, but Like an Arrow makes it plain that Blackberry Smoke is a close cousin of the