title: It is possible to compile with Api 23 (6.0) and to maintain the old permission system (install-time)?
body: <p>I readed this in the official android blog:</p>
  <blockquote>
  <p><strong>Permission Changes</strong>  With Marshmallow, permissions have moved from
  install-time to runtime. This is a mandatory change for SDK 23+,
  meaning it will affect all developers and all applications targeting
  Android 6.0.</p>
  </blockquote>
  <p>So... it is possible to mantain the old permission system if you compile with Android 6.0 (api 23) but you target Android 4.4 (api 20)?</p>
  <p>I mean doing this:</p>
  <pre><code>    compileSdkVersion 'Google Inc.:Google APIs:23'
      buildToolsVersion &quot;23.0.1&quot;
  
      defaultConfig {
          minSdkVersion 10
          targetSdkVersion 20
      }
  </code></pre>
  <p>The requisites of my project for now are to maintain the old permission system and to target sdk version 20 (because I need to maintain the old notification system and if you target sdk version higher than 20 you must use the new notification system). So... can I compile with Api 23 and maintain old permission system if I target sdk version 20?</p>