Update a comment mentioning an OCaml version.
Update a comment mentioning an OCaml version.

This is still true as of 4.09.

coq/coq,Zimmi48/coq,SkySkimmer/coq,SkySkimmer/coq,ejgallego/coq,Zimmi48/coq,Zimmi48/coq,SkySkimmer/coq,coq/coq,SkySkimmer/coq,coq/coq,coq/coq,ejgallego/coq,ejgallego/coq,Zimmi48/coq,ejgallego/coq