Meta.getIncludeDir doesn't processes case when path is ".".
Meta.getIncludeDir doesn't processes case when path is ".".

Spotted by troydm.

Signed-off-by: Jerome Maloberti <b36fb9a722a10bb34e362f7295df84dad897d500@gmail.com>

ocaml-obuild/obuild,z4p4n/obuild,ocaml-obuild/obuild,z4p4n/obuild