Make PicoContainer Serializable

The hardest part here is what to do when a component is registered that is not Serializable.

In that case, it should be removed from the internal lists/maps prior to serialization, and reinitialised upon deserialisation.

PicoContainer's responsability should only be:

• instantiate new components that were not serialised (those that were not Serializable).
• Rewire the dependencies.

This shouldn't be so hard to do. The hardest part is dealing with all the internal collections without getting them oput of sync.