Import changes from the newtypein branch (svn merge -r 9367:9381 https://yquem.inria.fr/caml/svn/ocaml/branches/newtypein).
Import changes from the newtypein branch (svn merge -r 9367:9381 https://yquem.inria.fr/caml/svn/ocaml/branches/newtypein).

git-svn-id: e7e61699ce1738538ffebb75374fbea0924bc775@9382 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02

yunxing/ocaml,yunxing/ocaml,msprotz/ocaml,gerdstolpmann/ocaml,eliberis/ocaml,gerdstolpmann/ocaml,yunxing/ocaml,eliberis/ocaml,gerdstolpmann/ocaml,gerdstolpmann/ocaml,msprotz/ocaml,msprotz/ocaml,msprotz/ocaml,eliberis/ocaml,msprotz/ocaml,yallop/camlp4,chambart/camlp4,hhugo/camlp4,eliberis/ocaml,yunxing/ocaml,gerdstolpmann/ocaml,eliberis/ocaml,yunxing/ocaml