Fix install of coq-dpdgraph.0.4
Fix install of coq-dpdgraph.0.4

gmalecha/opam-coq-archive,gmalecha/opam-coq-archive,gmalecha/opam-coq-archive,mattam82/coq-opam-archive,coq/opam-coq-archive,mattam82/coq-opam-archive,mattam82/coq-opam-archive