treeWalk = new TreeWalk(reader);
COMPLETE = revWalk.newFlag("COMPLETE"); //$NON-NLS-1$
IN_WORK_QUEUE = revWalk.newFlag("IN_WORK_QUEUE"); //$NON-NLS-1$
LOCALLY_SEEN = revWalk.newFlag("LOCALLY_SEEN"); //$NON-NLS-1$
localCommitQueue = new DateRevQueue();
workQueue = new LinkedList<ObjectId>();
}