ACCUMULO-2532 Relax access on cleanupIndexOp and add tests that show failure case.
ACCUMULO-2532 Use VolumeManager to check for tmpDir existence.
ACCUMULO-2532 Expand on comment as to why we create this (otherwise curious) file
ACCUMULO-2462 Add TODO marker for bcfile.PrintInfo
ACCUMULO-2530 add TODO in code to reference ticket