title: Add new field to sales_flat_quote_item and save data
body: <p>I created a new column in table <code>sales_flat_quote_item</code> called 'wiid'. I want to save data in this field when any product form wishlist is added to cart. So, here is my MageWishlist_Model_Item:</p>
  
  <pre><code>$quote_item  = Mage::getModel('sales/quote_item')-&gt;load($cart-&gt;getQuote()-&gt;getItemByProduct($product)-&gt;getId());
  //I log() this $quote_item and is returning the correct object
  $quote_item_id = $quote_item-&gt;getId();
  //Is returning the correct quote item id  from database
  $wishlist_item_id = $this-&gt;getId();
  //Is returnig the correct wishlist item id 
  $quote_item-&gt;setWiid($wishlist_item_id);
  $quote_item-&gt;save();
  </code></pre>
  
  <p>The problem is in last two lines above. It's not saving in database.</p>