Merge "Do not use block_verify on target-files where feature is missing."

    self.partition = partition

    self.check_first_block = check_first_block

    version = 1

    self.version = 1

    if OPTIONS.info_dict:

      version = max(

      self.version = max(

          int(i) for i in

          OPTIONS.info_dict.get("blockimgdiff_versions", "1").split(","))

    b = blockimgdiff.BlockImageDiff(tgt, src, threads=OPTIONS.worker_threads,

                                    version=version)

                                    version=self.version)

    tmpdir = tempfile.mkdtemp()

    OPTIONS.tempfiles.append(tmpdir)

    self.path = os.path.join(tmpdir, partition)

    if not self.src:

      script.Print("Image %s will be patched unconditionally." % (partition,))

    else:

      if self.version >= 3:

        script.AppendExtra(('if block_image_verify("%s", '

                            'package_extract_file("%s.transfer.list"), '

                            '"%s.new.dat", "%s.patch.dat") then') %

                           (self.device, partition, partition, partition))

      else:

        script.AppendExtra('if range_sha1("%s", "%s") == "%s" then' %

                            (self.device, self.src.care_map.to_string_raw(),

                            self.src.TotalSha1()))

      script.Print("Verified %s image..." % (partition,))

      script.AppendExtra('else');