ocaml 4.09

[Olaf Hering]

Does anyone object to use stdlib-shims as new requirement for pre-4.09 support?

[   58s] 321 | 	   Pervasives.at_exit finalize; (* register finalization function *)
[   58s]           ^^^^^^^^^^^^^^^^^^
[   58s] Error (alert deprecated): module Stdlib.Pervasives
[   58s] Use Stdlib instead.
[   58s] 
[   58s] If you need to stay compatible with OCaml < 4.07, you can use the 
[   58s] stdlib-shims library: https://github.com/ocaml/stdlib-shims

[François Bérenger]

I think just using at_exit, without the Pervasives prefix just works.