Apply the "redirection patch" to ocamlnet 3.7.7

This is essential to be able to download Jane Street blog feed
https://blogs.janestreet.com/category/ocaml/feed/
tdk.0.1.0: initial release
tdk.0.1.0: add ocaml-version constraint
Merge pull request #3056 from seliopou/master

tdk.0.1.0: initial release
Merge pull request #3055 from Chris00/ocamlnet-3.7.7

Apply the "redirection patch" to ocamlnet 3.7.7