cartalyst/sentry — pull request #444 by ikhsan017 (2014-06-19 13:58:23+00:00)
Title: modify getPassword so it respect getPasswordName

when trying to extend this model, and using custom password field, it not respect overrided getPasswordName()

e.g. I want to change password field to other field, and use model below as user model
```php
class ProviderCredential extends Cartalyst\Sentry\Users\Eloquent\User {

public function getPasswordName()
{
return 'OtherThanDefaultPasswordField';
}
}
```