Migrate the composite support, iPOJO API and Online manipulator to the new manipulator API (FELIX-4509).

The iPOJO API build a classloader around the given bundle context.
The composite use the class's classloader (should not be used anyway as the generated code is pretty simple)
The online manipulaotr use a bridge loading classes from the original bundle (under deployment) and from the set of deployed bundles

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1592771 13f79535-47bb-0310-9956-ffa450edef68