MG2 feature been broken in MG3

[richard.east@…]

The ModelGlue?.xml reference contains the following under the <event-handler> entry:

If an <event-handler> is added whose NAME attribute is in use by another event-handler, it will overwrite the previous event-handler, except in the case of the predefined modelglue.onRequestStart, modelglue.onQueueComplete, and modelglue.onRequestEnd event-handlers. In this case, any messages, views, or results defined will be added to the predefined event handlers.

In MG3, this is not the case. If an <event-handler> is added called modelglue.onRequestStart, it overwrites the previous event-handler.