Merge pull request #576 from vogler/master

remove CamlinternalPr for compilation with OCaml 4.02.0
fix BatPrintf for 4.02 -- remove faulty (string = fmt) assumption
Remove batPrintf.ml and batPrintf.mli
Merge pull request #581 from jpdeplaix/rm-ml

Remove batPrintf.ml and batPrintf.mli
cleanup version tags and whitespace for next release
start versioning batBigarray.ml (no code change in this commit)
batBigarray.ml: make the layout computation 4.02-safe
changelog for 2.3.0
bump version in _oasis
minor: avoid ocamlbuild warnings in <examples/>
minor: fix ocamlfind-related ocamlbuild warning by consistently using -use-ocamlfind
start versioning barArray
Array: make_float: int -> float array
start versionning batList.ml
stdlib 4.02: List.sort_uniq (we had List.sort_unique already)
add a batBytes module simply including ocamlfind's Bytes module
start versionning batBuffer.ml
add 4.02 bytes-related functions to Buffer
start versioning batDigest.ml
minor: Makefile, sort PREPROCESSED_FILES lines for diff readability