Export caml_md5_channel in md5.h

ce76e02 flambda-backend: Bugfix for type_application (ocaml#746)
44f3afb flambda-backend: PR580 for main branch (ocaml#743)
b851eaa flambda-backend: Backport first part of ocaml/ocaml PR10498 (ocaml#737)
fafb4bd flambda-backend: Fix return mode for eta-expanded function in type_argument (ocaml#735)
c31f6c3 flambda-backend: Fix treatment of functions called [@nontail] (ocaml#725)
847781e flambda-backend: Fix build_upstream post-PR703 (ocaml#712)
bfcbbf8 flambda-backend: Extend Pblock value kind to handle variants (ocaml#703)
b2cab95 flambda-backend: Merge ocaml-jst
a6d6e0e flambda-backend: Merge ocaml-jst
88a4f63 flambda-backend: Use Pmakearray for immutable arrays (ocaml#699)
eeaa44b flambda-backend: Install an ocamldoc binary (ocaml#695)
48d322b flambda-backend: Ensure that GC is not invoked from bounds check failures (ocaml#681)
4370fa1 flambda-backend: Review changes of term directory (ocaml#602)
65a4566 flambda-backend: Add code coverage using bisect_ppx (ocaml#352)
63ab65f flambda-backend: Bugfix for primitive inclusion (ocaml#662)
7e3e0c8 flambda-backend: Fix inclusion checks for primitives (ocaml#661)
96c68f9 flambda-backend: Speed up linking by changing cmxa format (ocaml#607)
1829150 flambda-backend: Bugfix for Translmod.all_idents (ocaml#659)

git-subtree-dir: ocaml
git-subtree-split: ce76e02