Replace 5 authors in AR3 WGI Ch8 (same last name, different persons)

* 5 CA authors: "P.D. Jones", "K.E. Taylor", "M. Wild",
  "D. Williamson", "X.-H. Zhang"
Add 1 missing author in AR3 WGI Ch8

* R. Tol (Vrije Universitiet, Netherlands)