This unit test verifies that if an Action Event doEventSubmit_ is called,
and it throws an Exception, the exception is bubbled up out of the
ActionLoader...
This unit test verifies that if an Action Event doEventSubmit_ is called,
and it throws an Exception, if the action.event.bubbleexception property
is set to false then the exception is NOT bubbled up
This unit test verifies that if your standard doPerform is called, and it
throws an Exception, if the action.event.bubbleexception property is set
to false then the exception is NOT bubbled up