Add mysql test config for export.
ENG-5478 --safemode option for recover command.
hide safemode.
Merge branch 'master' into ENG-5420
remove temp. stuff.
Merge pull request #936 from VoltDB/ENG-5478

Eng 5478
Merge pull request #937 from VoltDB/ENG-5420

Eng 5420
For ENG-5489, remove locking from StatsAgent that causes deadlocks registering stats at startup
Patched geb Web Studio test scripts & data to pass for 4.0.
For ENG-5489, dummy mode works a lot better if it's turned on /facepalm
Revert "For ENG-5489, dummy mode works a lot better if it's turned on /facepalm"

This reverts commit 7e4f064a6f4ceec1a2ed590f90dbec759ac93d64.
For ENG-5489, add explanation of putIfAbsent idiom
Merge pull request #941 from VoltDB/ENG-5489

For ENG-5489, remove locking from StatsAgent that causes deadlocks regis...
Add manual test for postgresql export data.
Merge branch 'master' into ENG-5420
typo in comment.
Merge pull request #942 from VoltDB/ENG-5420

Eng 5420
ENG-5471 REVERT BEFORE RELEASE: Sanity check balance partitions by doing a table
scan at the end of each @BalancePartitions call.

This is for catching the bug in ENG-5471. Scan the table for any tuple that's in
the range but not moved.
Merge pull request #943 from VoltDB/ENG-5471

ENG-5471 REVERT BEFORE RELEASE: Sanity check balance partitions
missed passing replication port