Replace EstTime with System time in NIOWriteStream; replace COWMap with ConcurrentHashMap.
Replace inner map with concurrent map in AdmissionControlGroup.
Rename variables in DummyIterator of InitiatorStats.
fix wrong order when inserting to m_connectionStats
Remove unnecessary imports and fix junit test for NIOWriteStream.
Fix sqlcmd ! usage
Added comment per scooper review
Revert back to EstTime in NIOWriteStream.
Merge pull request #587 from VoltDB/ENG-4807

Fix sqlcmd ! usage
ENG-4808: use a long rather than int to store total result size.  It
will now take 3.5 trillion transactions which return the maximum result
size to overflow.
Merge pull request #585 from VoltDB/concurrentHashMap

ENG-4804: Replace COWMap with java ConcurrentHashMap
Add memcheck_lite ant target
Fix recent regression (as of ENG-4825 fix) LIMIT INTEGER/BIGINT confusion, asserted in debug, worked by luck(?) in release.
Add quava to 3rd party readme
Merge branch 'master' of github.com:VoltDB/voltdb
Merge branch 'elastic'
Merge branch 'elastic'
Change target name to lightweighted
Merge pull request #589 from VoltDB/ENG-4560-memcheck

Add memcheck_lite ant target
Fix deadlock in StreamSnapshotDataReceiver.

Only grab the buffer from the pool after receiving a message from the
mailbox. If the buffer is grabbed before receiving the message, this thread
could hold on to a buffer it may not need and other receivers will be blocked if
the pool has no more buffers left.