title: missing animation in R.anim and Progressbar in ImageSwitcher
body: <p>I like to get the two slide in animation, 
  which are missing I think. how can I do this, 
  anything would be very nice </p>
  
  <pre><code>android.R.anim.slide_in_right
  android.R.anim.slide_out_left
  </code></pre>
  
  <p>I would liek to slide in some pictures the other way around is working</p>
  
  <p>on the other side, is it possible to have an progress bar under the picture which shows how much pictures are left</p>