[pkg] fix Debian package dependencies Fix regression introduced by switch to dh_python2: it reads our egg-info/requires.txt to try and guess package dependencies. This generates a broken dependency on nonexistent "python-yapps" (instead of yapps2-runtime) and an unnecessary one on python-logilab-constraint (we use gecode).

TODO list for the rql package
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* retirer les restrictions e_type = [A-Z][a-z_]*
                           r_type = [a-z_]*

* detecter les erreurs ASAP pour éviter stcheck

* tests unitaires pour sqlgen

* revoir tutoriel

* specification 1.0