- expose the core spellchecking functionality in Misc rather than Typetexp
- remove the too high-order (yet insufficiently parametric)
Typetexp.spellcheck from the public interface
- rewrite the spellchecking functions for variants and fields in
Typecore from the Misc functions rather than reusing
Typetexp.spellcheck
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@15650 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02