If you're itching for some vintage R&B from around the way, a few labels have some new releases to keep you satisfied. One is a classic soul LP making its debut on CD, the other two are some solid disco efforts with some bonus cuts to boot. Iconoclassic Records has planned a June 22 reissue of It's Our Thing by The Isley Brothers. Released on the Isleys' own label after leaving a solid but fleetingly successful tenure at Motown, this disc includes the funky, anthemic "It's Your Thing." This