ocaml-ocamlgraph-1.8.8-bp154.2.18

- Require current ocaml-rpm-macros
- Use _service file
- Build with dune

- Update summaries

- Remove old code in the spec file.
- Install LICENSE with %license.

- Update to version 1.8.8:
  * Fix installation.
  * Safe-string compatible.
  * Fix method get_edge_layout of class abstract_model of
    DGraphModel.Make. The bug could have occured when there are
    several edges between two vertices.
  * [Traverse/Pack] added Dfs.fold and Dfs.fold_component
    (tail-recursive).
  * Fix implementation of Golberg-Tarjan maximal flow algorithm:
    + No more function min_capacity in the input interface.
    + Renaming as follows: Flow.Goldberg -> Flow.Goldberg_Tarjan
    and Pack.goldberg -> Pack.goldberg_tarjan.
  * New functors [WeakTopological] and [ChaoticIteration] to
    compute fixpoints with widening, following Bourdoncle's
    algorithms.

- Use Group: Development/Languages/OCaml

- Upgrade to version 1.8.7

- Wrap specfile conditionals to fix quilt setup

- Initial package: ocaml-ocamlgrah-1.8.6