title: NSMutableArray: addObjectsFromArray retaining
body: <p>I am calling [array addObjectsFromArray:dictionary.allValues]
  Will each copied object have retain count incremented for it? 
  My understanding that when I do [array addObject:obj] , it will retain obj for me untill I delete obj from array or release array itself. Was wondering if its the same with addObjectsFromArray</p>
  
  <p>Thanks.</p>