title: Margin does not impact in "include"
body: <p>I have a view with articles. It uses "include", and I'm trying to make a little margin between them. However, "android:layout_marginTop" does not seem to have any impact on the layout.</p>
  
  <p>What am I doing wrong?</p>
  
  <pre><code>&lt;LinearLayout 
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:orientation="vertical" &gt;    
      &lt;include android:id="@+id/article1" layout="@layout/mainarticle" /&gt;
      &lt;include android:id="@+id/article2" android:layout_marginTop="10dip" layout="@layout/article" /&gt;
      &lt;include android:id="@+id/article3" android:layout_marginTop="10dip" layout="@layout/article" /&gt;
      &lt;include android:id="@+id/article4" android:layout_marginTop="10dip" layout="@layout/article" /&gt;
      &lt;include android:id="@+id/article5" android:layout_marginTop="10dip" layout="@layout/article" /&gt;    
  &lt;/LinearLayout&gt;
  </code></pre>