how to get the Locale list in en_<COUNTRY> format
<p>I want to return a list of all the countries in <code>&lt;lang&gt;_&lt;Country&gt;</code> format where <code>&lt;lang&gt;</code> should be english,
So I need a list like en_GB,en_US,en_JP etc. Looking at the Locale's api is returning <code>&lt;lang&gt;_&lt;Country&gt;</code> but it is not restricting it to language as en. 
Am I missing something here?</p>
