commit o_and_opens.diff

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14787 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
fix man pages: should be open!

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14788 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02