Remove support for OCaml 4.07.1 and older
This amounts to removing the branches OCAML_VERSION < 408
at ocamliface/mlcompat.cpp.ml
and fixing anything that breaks.
Eventually we will also remove support for other newer versions.
This amounts to removing the branches OCAML_VERSION < 408
at ocamliface/mlcompat.cpp.ml
and fixing anything that breaks.
Eventually we will also remove support for other newer versions.