[clib] Deprecate string functions available in OCaml 4.05

- `CString.strip -> String.trim`
- `CString.split -> String.split_on_char`

As noted by @ppedrot there are some small differences on semantics:

> OCaml's `trim` also takes line feeds (LF) into account. Similarly,
> OCaml's `split` never returns an empty list whereas Coq's `split`
> does on the empty string.

1 files changed, 3 insertions, 3 deletions

diff --git a/tools/coq_makefile.ml b/tools/coq_makefile.ml
index 0e56cc3c0f..d91c4f0b34 100644
--- a/tools/coq_makefile.ml
+++ b/tools/coq_makefile.ml
@@ -248,7 +248,7 @@ let rec logic_gcd acc = function
 
 let generate_conf_doc oc { defs; q_includes; r_includes } =
   let includes = List.map (forget_source > snd) (q_includes @ r_includes) in
-  let logpaths = List.map (CString.split '.') includes in
+  let logpaths = List.map (String.split_on_char '.') includes in
   let gcd = logic_gcd [] logpaths in
   let root =
     if gcd = [] then
@@ -378,8 +378,8 @@ let destination_of { ml_includes; q_includes; r_includes; } file =
   | _ -> assert false
 
 let share_prefix s1 s2 =
-  let s1 = CString.split '.' s1 in
-  let s2 = CString.split '.' s2 in
+  let s1 = String.split_on_char '.' s1 in
+  let s2 = String.split_on_char '.' s2 in
   match s1, s2 with
   | x :: _ , y :: _ -> x = y
   | _ -> false