wicket-spring enhancements

[Kenny MacLeod]

Hi there,

I've been looking at the wicket-spring integration stuff, and I've come 
up with a couple of enhancements which I've found useful, and would be 
happy to contribute:

 1) An enhanced SpringWebApplicationFactory which has the capability of 
creating and initializing its own Spring appcontext, rather than using 
the root webabb context. This allows multiple Wicket apps within the 
same webapp, each with its own private spring context.

 2) A modified AnnotProxyFieldValueFactory which gives the option of 
not creating CGLIB proxies for the injected Spring beans. In deployment 
environments where session serialization is not enabled, it seems an 
unnecessary restriction to require that these proxies be created, given 
that not all target beans can be proxied in this way. By allowing this 
restriction to be relaxed, a wider set of scenarious can be catered for. 
The new flag is passed in from a modified SpringComponentInjector.

I've made these local changes against the current svn trunk. I can keep 
them private to my own environment, but I think these are useful and 
general enough to warrant contributing, if someone's interested in 
taking them on.

kenny