title: how can i merge two AbRecordRef togethers OR how to add ABRecordRef as a link to another ABRecordref?
body: <p>i need to merge two person in the same address book
  OR Add ABRecordRef as a link to another ABRecordref like adding first name</p>
  
  <pre><code>ABRecordSetValue(myRecord, kABPersonFirstNameProperty, @"Name", NULL);
  </code></pre>
  
  <p>So any duplication in Address Book will be disappear </p>