Added new public methods to class FraSCAti and interface CompositeManager in order to simplify integration with other frameworks like OSGi, Nuxeo, Kerovee:
- FraSCAti newFraSCAti(ClassLoader classLoader) to instantiate a new FraSCAti instance in the context of a given class loader.
- Component getComposite(String composite, ClassLoader classLoader) to load a composite from a given class loader.
- ProcessingContext newProcessingContext(ClassLoader classLoader) to create a new processing context related to a given class loader.