<*.cmx> and not <mlpost.cmx>: for-pack(Mlpost)

<mlpost.mli> : pkg_cairo

<cairost.*> or <mlpost.mlpack>: pkg_cairo
<tool.*>: use_unix

<test*> : use_unix, pkg_bitstring, pkg_cairo, use_cairo_bigarray
<handbookgraphs.*> : use_unix, pkg_bitstring, pkg_cairo, use_cairo_bigarray
<othergraphs.*> : use_unix, pkg_bitstring, pkg_cairo, use_cairo_bigarray
