Compatibility with old OCamls
Get rid of some uses of recent OCaml features. The missing equality between Lexing.lexbuf and Stdcompat.Lexing.lexbuf is an Stdcompat bug which is corrected upstream.
Get rid of some uses of recent OCaml features. The missing equality between Lexing.lexbuf and Stdcompat.Lexing.lexbuf is an Stdcompat bug which is corrected upstream.