.vi files: .vo files without proofs

File format:
 The .vo file format changed:
   - after the magic number there are 3 segments. A segment is made of 3
     components: bynary int, an ocaml value, a digest.  The binary int
     is the position of the digest, so that one can skip the value without
     unmarshalling it
   - the first segment is the library, as before
   - the second segment is the STM task list
   - the third segment is the opaque table, as before
 A .vo file has a complete opaque table (all proof terms are there).
 A .vi file follows the same format of a .vo file, but some entries
 in the opaque table are missing.  A proof task is stocked instead.

Utilities:
 coqc: option -quick generates a .vi insted of a .vo
 coq_makefile: target quick to generate all .vi
 coqdep: generate deps for .vi files too
 votour: can browse .vi files too, the first question is which segment
         should be read
 coqchk: rejects .vi files

1 files changed, 1 insertions, 1 deletions

diff --git a/library/library.mli b/library/library.mli
index 8ed3afd66..530209485 100644
--- a/library/library.mli
+++ b/library/library.mli
@@ -37,7 +37,7 @@ val import_module : bool -> qualid located -> unit
 val start_library : string -> DirPath.t * string
 
 (** {6 End the compilation of a library and save it to a ".vo" file } *)
-val save_library_to : DirPath.t -> string -> unit
+val save_library_to : ?todo:'a -> DirPath.t -> string -> unit
 
 (** {6 Interrogate the status of libraries } *)