title: Resigning a xamarin android apk using apksigner fails
body: <p>after having generated a signed apk using archive/adhoc distribute and installed it on a device it works fine.</p>
  
  <p>But when i resign the signed apk using apksigner.bat (from android sdk) using the same keystore and deploy it on a device, the app won't launch. </p>
  
  <p>Adb log:</p>
  
  <pre><code>W/monodroid(12082): Trying to load sgen from: /data/app-lib/com.company.TSMClient-1/libmonosgen-2.0.so
  F/monodroid(12082): No assemblies found in '(null)' or '&lt;unavailable&gt;'. Assuming this is part of Fast Deployment. Exiting...
  I/ActivityManager(21181): Process com.company.TSMClient (pid 12082) has died.
  </code></pre>
  
  <p>I checked inside the apk for diff and found that in the META-INF folder the resigned apk has slightly smaller .RSA and .SF files.</p>
  
  <p>Any idea what's wrong ?</p>