New declaration of add_node
PREC and SUCC rels printed only in debug mode git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/semagramme/libcaml-grew/trunk@8965 7838e531-6607-4d57-9587-6c381814729c
PREC and SUCC rels printed only in debug mode git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/semagramme/libcaml-grew/trunk@8965 7838e531-6607-4d57-9587-6c381814729c