Revert "ocaml-bitstring: git -> 2.0.4 (#17002)"

This reverts commit a6e3a53229.

See #17002.

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

@@ -0,0 +1,28 @@
+{stdenv, fetchgit, buildOcaml, time, autoconf, automake}:
+
+buildOcaml rec {
+  name = "bitstring";
+  version = "f1673f8"; 
+  src = fetchgit {
+    url = "https://code.google.com/p/bitstring/";
+    rev = "f1673f8";
+    sha256 = "1lh97qf1b7mq64pxkphr2w91ri5hfwg58cpjb2xd8a453c9jylw4";
+  };
+
+  patches = [ ./camlp4-git.patch ./meta.patch ./srcdir.patch ];
+
+  buildInputs = [time autoconf automake];
+  doCheck = true;
+
+  createFindlibDestdir = true;
+  hasSharedObjects = true;
+
+  preConfigure = "./bootstrap";
+
+  meta = with stdenv.lib; {
+    description = "This library adds Erlang-style bitstrings and matching over bitstrings as a syntax extension and library for OCaml";
+    homepage = http://code.google.com/p/bitstring/;
+    license = licenses.lgpl21Plus;
+    maintainers = [ maintainers.maurer ];
+  };
+}