It appears 20th anniversary music reissues come in threes. Yesterday had words on Nirvana’s Nevermind and U2’s Achtung Baby; now, there’s word from Legacy Recordings that August will see an expanded edition of…Spin Doctors’ Pocket Full of Kryptonite. Sure, giggle all you want, but it’s hard to deny that Spin Doctors had quite a moment in the sun in the early 1990s. Formed in New York City in the late ’80s, Spin Doctors were initially known more for their jam-friendly live shows (often performing alongside Blues Traveler, whose frontman John Popper was originally…