Functions to close the open recursion in Ast_mapper.

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14182 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Adapt one more example.

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14183 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Adapt one more example.

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14184 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Adapt one more example.

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14185 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Get rid of recursion closing functions, being more explicit on the recursion does not hurt.

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14186 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Cleanup.

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14187 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02