By Denny Dyroff, Entertainment Editor, The Times Tom Paxton and John McCutcheon When Tom Paxton and John McCutcheon perform together on October 26 at the Sellersville Theater (24 West Temple Avenue, Sellersville, 215-257-5808, www.st94.com), they bring together years of professional music experience – Paxton (61 years) and McCutcheon (53 years). They are touring in support of its new album, “Together,”...