Issue: Injection on EJB interceptors is not working #3

This commit fixes the injection failure in @EJB Interceptors. See issue #3.

Details:
	- implemented an approach based on an @InterceptorBinding. The solution
replaces @Interceptors() in processed beans with an global interceptor
wrapper/proxy. The wrapper delegates the InvocationContext to the
modified InterceptorBinding.
	- implemented a cache optimization regarding the modification of
Interceptor bindings in @EJB Interceptors.
	- implemented several test cases: 
	Created Sample EJB together with a basic @AroundInvoke Interceptor to
verify the NPE in the Interceptor proposed by @agori.
	- Fixed Debug log in EntityManagerProducer
	- Processing @Interceptors annotation and replacing with altered
InterceptionBindings. 
	- Saving altered InterceptorBindings in GlobalInterceptorImpl