Keep inlined records in Typedtree and Types.  Synthesize record types when inserting in the environment and module components, as for labels and constructors.  Following features are not supported: inline record for exceptions, GADTs, polymorphic fields.

git-svn-id: http://caml.inria.fr/svn/ocaml/branches/constructors_with_record3@14553 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02