InjectionTarget methods called with a proxied instance

Let's have a bean whose InjectionTarget is wrapped by an extension to provide additional dependency injection, etc...

Although it is not explicitly stated in the spec, it is obvious that inject(), postConstruct() and preDestroy() methods of the InjectionTarget should be called with the actual raw bean instance and not with a client proxy.

org.jboss.weld.tests.extensions.injectionTarget.InjectionTargetTest

(Consider moving the test into the TCK if the presumtion can be implied)