title: Proguard: use variable to point to the sdk directory
body: <p>I have these two lines in some of my proguard.cfg files:</p>
  
  <pre><code>-libraryjars /path/to/sdk/android-sdk-linux/add-ons/addon-google_apis-google_inc_-10/libs/maps.jar
  -libraryjars /path/to/sdk/android-sdk-linux/tools/support/annotations.jar
  </code></pre>
  
  <p><strong>My question is whether there is some variable one can use to avoid having a hardcoded path to the sdk?</strong></p>
  
  <p>Otherwise when I commit the file into svn, the other developers must change the file manually, which is not really maintainable.</p>
  
  <p>I've found the <code>&lt;java.home&gt;</code> variable, but <code>&lt;android.sdk&gt;</code> or <code>&lt;sdk.dir&gt;</code> don't work.</p>