[core] [api] Support OCaml 4.08

The changes are large due to `Pervasives` deprecation:

- the `Pervasives` module has been deprecated in favor of `Stdlib`, we
  have opted for introducing a few wrapping functions in `Util` and
  just unqualified the rest of occurrences. We avoid the shims as in
  the previous attempt.

- a bug regarding partial application have been fixed.

- some formatting functions have been deprecated, but previous
  versions don't include a replacement, thus the warning has been
  disabled.

We may want to clean up things a bit more, in particular
w.r.t. modules once we can move to OCaml 4.07 as the minimum required
version.

Note that there is a clash between 4.08.0 modules `Option` and `Int`
and Coq's ones. It is not clear if we should resolve that clash or
not, see PR #10469 for more discussion.

On the good side, OCaml 4.08.0 does provide a few interesting
functionalities, including nice new warnings useful for devs.

1 files changed, 1 insertions, 1 deletions

diff --git a/plugins/micromega/csdpcert.ml b/plugins/micromega/csdpcert.ml
index d8f71cda0c..cf5f60fb55 100644
--- a/plugins/micromega/csdpcert.ml
+++ b/plugins/micromega/csdpcert.ml
@@ -136,7 +136,7 @@ let pure_sos  l =
     I should nonetheless be able to try something - over Z  > is equivalent to -1  >= *)
  try
   let l = List.combine l (CList.interval 0 (List.length l -1)) in
-  let (lt,i) =  try (List.find (fun (x,_) -> Pervasives.(=) (snd x) Mc.Strict) l)
+  let (lt,i) =  try (List.find (fun (x,_) -> (=) (snd x) Mc.Strict) l)
    with Not_found -> List.hd l in
   let plt = poly_neg (poly_of_term (expr_to_term (fst lt))) in
   let (n,polys) = sumofsquares plt in (* n * (ci * pi^2) *)