fix #38. move META file to fix tests when atdgen is not installed

[Khady]

No description provided.

[mjambon]

I see that make test still works because it complains that it finds 2 meta files, but I don't know how. I can't find a reference explaining why META.something is treated like a META file and when. Could you please explain this as a comment in the file itself?

[Khady]

From http://projects.camlcity.org/projects/dl/findlib-1.6.2/doc/ref-html/r721.html

The outermost variable assignments and additions belong to the main package. The name of the main package is not defined within META; it is either the name of the directory containing META or the suffix of the META file (if the name of the META file is formed like META.name).

If this explanation is good for you, I will add it as a comment.

[mjambon]

Got it. Thank you!