title: setCustomAnimations replace always on top for exiting fragment
body: <p>I have this code:</p>
  
  <pre><code>FragmentTransaction transaction = manager.beginTransaction();
  
              stopMain = new OTDMainStopsFragment();
              transaction.setCustomAnimations(R.anim.right_left_anim_x_left,R.anim.fragment_scale_out, R.anim.fragment_scale_in, R.anim.left_right_anim_x_right);
              transaction.replace(R.id.main_fragment_container, stopMain).addToBackStack("OTDMainStopsFragment");
              transaction.commit();
  </code></pre>
  
  <p>What I was going to achive is to have an entering fragment on top of the exiting fragment, (add method wont do because I need to animate exit and entering of fragments when it is pop from the backstack).</p>
  
  <p>What is really happening is that when the fragment is changed the exiting fragment will animate on top of the entering fragment.</p>
  
  <p>How can I change the z index of the exiting fragment to be underneath the entering fragment.</p>
  
  <p>BTW popped fragment animations work the way it is</p>