Tightened down classloading with extreme prejudice
Logging is now enabled if system property "furnace.debug" is true
Deployment of an addon should not depend on whether or not it has local resource (it may only have exported dependencies, etc)
Only log exceptions for addon shutdown if FINE logging is requested.
Created Maven 3.0.x version of the resolver for maven plugin compatibility
Don't log the incremental Addon graphs unless FINE logging is requested.
Extracted AddonDependencyTraverser