Abstractions for tracking dataset inventory using "managed files".
  MFile - Abstraction of java.io.File
  MCollection - An abstract description of a collection of MFile.
  MController - Something that knows how to obtain the MFiles using a MCollection.
  CollectionManager - Manages a dynamic collection of MFile objects. Allows storing key/value pairs on MFiles
  CollectionUpdater - singleton class for background updating of Collections.
  TimePartitionCollections - collections partitioned by time range