backuptool: Map extra dynamic partitions for Addon.d V3

    self.script.append(self.WordWrap(cmd))

  def RunBackup(self, command, mount_point, dynamic=False):

    if self.fstab:

      p = self.fstab[mount_point]

    systemEntry = self.fstab[mount_point]

    if dynamic:

      for p in ["vendor", "product", "system_ext"]:

        fstabEntry = self.fstab.get("/"+p, None)

        if fstabEntry:

          self.script.append('map_partition("%s");' % (fstabEntry.device,))

      self.script.append(('run_program("/tmp/install/bin/backuptool.sh", "%s", map_partition("%s"), "%s");' % (

          command, p.device, p.fs_type)))

          command, systemEntry.device, systemEntry.fs_type)))

    else:

      self.script.append(('run_program("/tmp/install/bin/backuptool.sh", "%s", "%s", "%s");' % (

          command, p.device, p.fs_type)))

          command, systemEntry.device, systemEntry.fs_type)))

  def ShowProgress(self, frac, dur):

    """Update the progress bar, advancing it over 'frac' over the next