Align module and module type declarations between Parsetree and Typedtree.

git-svn-id: http://caml.inria.fr/svn/ocaml/branches/extension_points@13443 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Align typed value_declaration with parsetree.

git-svn-id: http://caml.inria.fr/svn/ocaml/branches/extension_points@13444 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02