version 2.19: adapt to lib version 2.22 and better handling of input files
git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/semagramme/dep2pict/trunk@8766 7838e531-6607-4d57-9587-6c381814729c
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/semagramme/dep2pict/trunk@8766 7838e531-6607-4d57-9587-6c381814729c