PR#6187: Add a warning when using -plugin-tag(s) without myocamlbuild.ml

(Patch by Jacques-Pascal Deplaix)

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14475 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
PR#6184: ocamlbuild: `ocamlfind ocamldep` does not support -predicate

(patch by Jacques-Pascal Deplaix)

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14476 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Pervasives: define [min_int] and [max_int] without assuming that integers are either 31 or 63 bits.

(Patch by Jérôme Vouillon)

Js_of_ocaml has 32 bit integers. Currently, it patches the bytecode,
just to get the correct values for [min_int] and [max_int]. It would be
simpler if this was not necessary.

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14477 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02