Update ocamlmod 0.0.7 — using oasis to uninstall

See ocaml/opam#2253 for the motivation

packages/ocamlmod/ocamlmod.0.0.7/files/_oasis_remove_.ml

@@ -0,0 +1,7 @@
+open Printf
+
+let () =
+  let dir = Sys.argv.(1) in
+  (try Sys.chdir dir
+   with _ -> eprintf "Cannot change directory to %s\n%!" dir);
+  exit (Sys.command "ocaml setup.ml -uninstall")

packages/ocamlmod/ocamlmod.0.0.7/files/ocamlmod.install

@@ -1 +1,6 @@
-bin: ["_build/src/ocamlmod.byte" {"ocamlmod"}]
+etc: [
+  "setup.ml"
+  "setup.data"
+  "setup.log"
+  "_oasis_remove_.ml"
+]

packages/ocamlmod/ocamlmod.0.0.7/opam

@@ -1,10 +1,24 @@
-opam-version: "1"
-maintainer: "[email protected]"
+opam-version: "1.2"
+maintainer: "[email protected]"
+homepage: "https://forge.ocamlcore.org/projects/ocamlmod/"
+bug-reports: "https://forge.ocamlcore.org/tracker/?group_id=244"
+dev-repo: "https://forge.ocamlcore.org/anonscm/darcs/ocamlmod/ocamlmod"
+authors: [ "Sylvain Le Gall" ]
+license: "LGPL-2.1 with OCaml linking exception"
 build: [
   ["ocaml" "setup.ml" "-configure" "--prefix" prefix]
   ["ocaml" "setup.ml" "-build"]
-  ["ocaml" "setup.ml" "-install"]
+]
+install: ["ocaml" "setup.ml" "-install"]
+remove: [
+  ["ocaml" "%{etc}%/ocamlmod/_oasis_remove_.ml" "%{etc}%/ocamlmod"]
+]
+build-test: [
+  ["ocaml" "setup.ml" "-configure" "--enable-tests"]
+  ["ocaml" "setup.ml" "-build"]
+  ["ocaml" "setup.ml" "-test"]
 ]
 depends: [
-  "ocamlfind"
+  "ocamlfind" {build}
+  "ounit" {test & >= "2.0.0"}
 ]