Patch to fix the Complex Object feature for create and update operation,...

... which produces the wrong XML like this

<request method="time_entry.create">
  <time_entry>[task_id, 999999][hours, 25]</time_entry>
</request>

Instead of

<request method="time_entry.create">
  <time_entry>
    <task_id>999999</task_id>
    <hours>25</hours>
  </time_entry>
</request>