title: In android application, Whats the usage of giving coreApp="true" in android Manifest file ? and why its not required before Honey Comb?
body: <p>In android application, Whats the usage of giving coreApp="true" in android Manifest file?<br>
  And why its not required before Honey Comb?<br>
  How it helps in improving the performance?  </p>