message: Fix flatbuffers workspace.bzl definition to work when TF is imported as a submodule.
diff: @@ -819,7 +819,7 @@ def tf_workspace(path_prefix="", tf_repo_name=""):
  native.new_http_archive(
  name = "flatbuffers",
  - build_file = "third_party/flatbuffers/flatbuffers.BUILD",
  + build_file = str(Label("//third_party/flatbuffers:flatbuffers.BUILD")),
  strip_prefix = "flatbuffers-971a68110e4fc1bace10fcb6deeb189e7e1a34ce",
  sha256 = "874088d2ee0d9f8524191f77209556415f03dd44e156276edf19e5b90ceb5f55",
  urls = [
  