GenericApplicationContext for BusApplicationContext

[Benson Margulies]

If BusApplicationContext extended GenericApplicationContext instead of
the ClassPathXml... thing it implements now, then more definitions could
be added later by using XmlBeanDefinitionReaders. I'm working on an idea
that would make use of this. Would anyone object to a patch that just
made this change (changing the BusApplicationContext)? Or would is there
a preference to create child contexts of the main Bus context for
situations like this?