Fix issue FELIX-2093 : iPOJO doesn't always use the correct class loader to load Nullable classes This came from the dynamic proxy strange behavior. The proxy don't use the specification classloader to load transitive classes. To fix that, the delegation is made manually. This commit also update some tests to the latest pax:exam / tinybundle API.
felix/trunk/ipojo/core/src/main/java/org/apache/felix/ipojo/handlers/dependency/Dependency.java
felix/trunk/ipojo/tests/core/service-dependency-optional/