Should allow <when> to be standalone

• User impact:

  High
• Similar Issues:

  None

Currently today it is not easy to put in a Mule flow something that you want to have happen if a condition is meet. It should be possible to put a <when> element directly under the flow so that you could have things like the following:

<flow name="main">
<when expression="payload='test'" evaluator="groovy">
<component>
</when>
</flow>

This would clean up a number of my flows dramatically. Also currently today using <choice> if you do not specific an otherwise and none of the when's match the message is just dropped when is not intuitive to the user and thus goes against easy on.