When failing to start or initialize the ModeShape repository does not close the already started components

ModeShape spawns separate threads for a number of different things, including the repository statistics and the repository change bus. However, if an error occurs during the repository startup or while the repository attempts to initialize, some of the already started components & thread pools are not correctly shut down, leaving potential open resources.

The repository should make sure it correctly cleans up any active components in case of an unorderly shutdown.