title: xamarin android support library v7 and v13 in the same app
body: <p>Until today I've been using support library v13 in my app. Now I also need to use support library v7.</p>
  
  <p>I added them to my app, but I have some problems.</p>
  
  <ol>
  <li><p>At the first compile I got a lot of error about not found resources. 
  I solved this one by setting the api level to 15 and min to 8. This was suggested on  stackoverflow. 
  Can someone explain why this is needed?</p>
  
  <p>2.Now I receive some errors saying Duplicate managed type found! Mappings between managed types and Java types must be unique. First Type: 'Android.Support.V4.Content.Loader/IOnLoadCompleteListenerImplementor, Xamarin.Android.Support.v13, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'; Second Type: 'Android.Support.V4.Content.Loader/IOnLoadCompleteListenerImplementor, Xamarin.Android.Support.v4, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.</p>
  
  <p>I guess this is because v13 allready has some types from v4 and v7 is referencing v4. 
  Any idea?</p></li>
  </ol>