[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, 5 insertions, 5 deletions

diff --git a/interp/dumpglob.ml b/interp/dumpglob.ml
index dc6a1ae180..0ec8b1e0c8 100644
--- a/interp/dumpglob.ml
+++ b/interp/dumpglob.ml
@@ -12,13 +12,13 @@ open Util
 
 (* Dump of globalization (to be used by coqdoc) *)
 
-let glob_file = ref Pervasives.stdout
+let glob_file = ref stdout
 
 let open_glob_file f =
-  glob_file := Pervasives.open_out f
+  glob_file := open_out f
 
 let close_glob_file () =
-  Pervasives.close_out !glob_file
+  close_out !glob_file
 
 type glob_output_t =
     | NoGlob
@@ -37,7 +37,7 @@ let dump_to_dotglob () = glob_output := MultFiles
 
 let dump_into_file f =
   if String.equal f "stdout" then
-    (glob_output := StdOut; glob_file := Pervasives.stdout)
+    (glob_output := StdOut; glob_file := stdout)
   else
     (glob_output := File f; open_glob_file f)
 
@@ -45,7 +45,7 @@ let feedback_glob () = glob_output := Feedback
 
 let dump_string s =
   if dump () && !glob_output != Feedback then 
-    Pervasives.output_string !glob_file s
+    output_string !glob_file s
 
 let start_dump_glob ~vfile ~vofile =
   match !glob_output with