For ENG-5959, add HdrHistogram
For ENG-5959, use HdrHistogram to track latency for VEM and microsecond precision for timing
For ENG-5959, thread safety for fun and profit
For ENG-5959, fix test bugs for latency stats
For ENG-5959, fix test bug
Fix the epic headache that is shutdown in unit tests.
Merge pull request #1169 from VoltDB/ENG-5959

Eng 5959 Everything is awesome when histograms are part of the team