runtime/mlString.js: fix 'greater than or equal to' function
runtime/mlString.js: fix 'greater than or equal to' function

Ignore-this: a57d4bb15ad3ac088cfe7e20ab77a481

darcs-hash:20110815133013-b8f7d-16efba884641530853bc829a9e12bcb3c11868eb

alainfrisch/js_of_ocaml,OCamlPro-Henry/js_of_ocaml,alainfrisch/js_of_ocaml,OCamlPro-Henry/js_of_ocaml,alainfrisch/js_of_ocaml,OCamlPro-Henry/js_of_ocaml,OCamlPro-Henry/js_of_ocaml,alainfrisch/js_of_ocaml,OCamlPro-Henry/js_of_ocaml,alainfrisch/js_of_ocaml