I forgot about {Bytes,String}Labels.mapi; thanks Alain!
ocamlbuild: add an interface knob to decide whether we are in an ocamlbuild project
PR#5851: print a hint when a module is not found and recursive traversal was heuristically disabled
ocamlbuild: remove the erroneous 'unused tag package(...)' warning when -pkg is used without -use-ocamlfind
ocamlbuild: fix the -use-ocamlfind documentation (not the default)
PR#6300: ocamlbuild -use-ocamlfind conflicts with -ocamlc