Lynn rockers keep rolling

The original Revolver, from left, Bill Dunlop, Bob MacOrquodale, Howie “Zowie” Colclough and Ron Andrews. BY BILL BROTHERTON LYNN — At 3:15 p.m. on Sunday, the longest running band in New England will take the stage at the second annual Razzmatazz Music Festival. Formed in Lynn, Revolver has thrilled fans of classic and Southern rock…