Adds javalib and sawja

Javalib is a library that parses Java .class files into OCaml data
structures. Sawja is a library written in OCaml, relying on Javalib to
provide a high level representation of Java bytecode programs.

Homepage: http://sawja.inria.fr/

pkgs/development/ocaml-modules/sawja/default.nix

@@ -0,0 +1,33 @@
+{stdenv, fetchurl, which, perl, ocaml, findlib, javalib }:
+let
+  pname = "sawja";
+  version = "1.5";
+  webpage = "http://sawja.inria.fr/";
+in
+stdenv.mkDerivation rec {
+
+  name = "ocaml-${pname}-${version}";
+
+  src = fetchurl {
+    url = "https://gforge.inria.fr/frs/download.php/33091/${pname}-${version}.tar.bz2";
+    sha256 = "0i8qgqkw9vgj6k2g6npss268ivxdkzx5qj2a52jbd8ih59rn68cm";
+  };
+
+  buildInputs = [ which perl ocaml findlib javalib ];
+
+  patches = [ ./configure.sh.patch ./Makefile.config.example.patch ];
+
+  createFindlibDestdir = true;
+
+  configureScript = "./configure.sh";
+  dontAddPrefix = "true";
+
+  propagatedBuildInputs = [ javalib ];
+
+  meta = {
+    description = "A library written in OCaml, relying on Javalib to provide a high level representation of Java bytecode programs";
+    homepage = "${webpage}";
+    license = stdenv.lib.licenses.gpl3Plus;
+    platforms = ocaml.meta.platforms;
+  };
+}