Delete return 0 although actually deleted at least one record - GAE implementation

```
GAE only issue.

<method>
  <delete>
    <pk/>
  </delete>
</method>

int count = dao.deleteByPrimaryKey( id );


```

Original issue reported on code.google.com by `vbarta...@gmail.com` on 11 Jun 2010 at 7:42
