Rename ocaml-meta -> ocaml-ocamlfind, nox-meta -> nox-ocamlfind
The library now lives under [Ocamlfind.Meta] to leave room for other
findlib metadata files (META is just one of them). The bytesrw
sub-library moves from [Meta_bytesrw] to [Ocamlfind_bytesrw] and is
exposed as [nox-ocamlfind.bytesrw].
monopam, the only in-tree consumer, switches over.