title: Do files under res/xml get merged by gradle?
body: <p>I have a file, <code>res/xml/analytics_tracker.xml</code> that stores my google analytics variables. I want to use different variables in my release vs debug builds.</p>
  
  <p>So I have <code>main/xml/analytics_tracker.xml</code> (has maybe 6 xml-elements) &amp; <code>release/xml/analytics_tracker.xml</code> (1 xml-element).</p>
  
  <p>I decompiled my release apk via apktool and looked at the <code>analytics_tracker.xml</code> file. It only had the 1 element from the <code>release</code> xml file.</p>
  
  <p>Shouldn't it merge the two xml files into one?</p>