title: Split lib_main was defined multiple times
body: <p><strong>Split lib_main was defined multiple times</strong></p>
  
  <p>In "com.android.tools.build:gradle:2.0.0-alpha3" build success,
  But the errors that occur in the "com.android.tools.build:gradle:2.0.0-alpha5".</p>
  
  <p><a href="https://i.stack.imgur.com/zUH78.png" rel="noreferrer"><img src="https://i.stack.imgur.com/zUH78.png" alt="console error"></a></p>
  
  <hr>
  
  <p>finally instant run work!! com.android.tools.build:gradle:2.0.0-alpha8 and gradle.properties "org.gradle.jvmargs = -Xmx8g" was resolved to change.</p>