Description:
------------
Objects loaded using PDO are *empty* (as in "they have no properties") when the __construct() method is called.

This was not the case before version 5.2.12. Usualy, properties loaded from the database where already applyed when the __construct() method was called.

This is really annoying since further initialisation during the __construct() method is now impossible.

Reproduce code:
---------------
class WdActiveRecord
{
	public function __construct()
	{
		var_dump($this);
	}
}

$stmt = $db->query('SELECT * FROM nodes WHERE nid = 498');

$stmt->fetchObject('WdActiveRecord');

Expected result:
----------------
object(site_pages_WdActiveRecord)[68]
  public 'nid' => string '498' (length=3)
  public 'parentid' => string '0' (length=1)
  public 'pattern' => string 'about' (length=5)
  public 'weight' => string '9' (length=1)
  public 'layout' => string 'page' (length=5)
  public 'location' => string '' (length=22)
  public 'is_navigation_excluded' => string '0' (length=1)
  public 'is_restricted' => string '0' (length=1)
  public 'uid' => string '9' (length=1)
  public 'title' => string '? propos' (length=16)
  public 'slug' => string 'apropos' (length=15)
  public 'created' => string '2009-11-29 18:13:17' (length=19)
  public 'modified' => string '2009-11-29 18:17:29' (length=19)
  public 'constructor' => string 'site.pages' (length=10)
  public 'is_online' => string '1' (length=1)
  public 'language' => string '' (length=0)
  public 'tnid' => string '0' (length=1)
  public 'is_translation_deprecated' => string '0' (length=1)

Actual result:
--------------
object(site_pages_WdActiveRecord)#68 (0) { }