Temporarily disable progress counting in release 4.0.
ENG-5547: Dump the content of the ReplaySequencer and the TransactionTaskQueue
on the SPIs when the MPI thinks it's deadlocked.

Helps debug MPI deadlocks during command log replay.
ENG-5547: Catch any throwables in case the dump is not successful.
repair shortcircuited mp reads
use better iterator for m_shortCircuitReads
tweaks to the export verifier to better detect end conditions
Merge pull request #994 from VoltDB/shortcircuit_mp_orphan_repair

Shortcircuit mp orphan repair
ENG-5561: Fix NPE in log message in RestoreAgent.
ENG-5561: Correct log message in Inits.
Merge pull request #995 from VoltDB/exportverifier_tweaks

tweaks to the export verifier to better detect end conditions
ENG-5528 Fix timestamp termination issues
For ENG-5579, handle race to clean up partitions during leader appointer promotion
For ENG-5579, add comments and an extra check for possible cleaned up partition
For ENG-5579, add a comment based on feedback from Ning
Merge pull request #1000 from VoltDB/ENG-5579

Eng 5579 Fix LeaderAppointer tripping over itself on promotion when joining nodes are leaving the cluster
ENG-5586: Fix premature buffer discard in StreamSnapshotDataTarget.

Discarding the buffers before they are acked causes the sender to send data too
fast, resulting in direct byte buffer OOM.
Merge pull request #1001 from VoltDB/ENG-5586

ENG-5586: Fix premature buffer discard in StreamSnapshotDataTarget.
Merge branch 'release-4.0'
ENG-5575: Log the snapshot request response if retry fails.
Experiment with doing ZK reads locally without agreement