ENG-6043 SnapshotSave detects better an ongoing snapshot
ENG-6043 handle better client response in snapshot save callbacks
Merge branch 'master' into ENG-6043
ENG-6043 improve snapshot messages serialization
For ENG-6043, factor out test and error retrieval for SnapshotSave results
For ENG-6043, factor out one more location
Merge branch 'master' into ENG-6043
For ENG-6043, fix bugs in checking for snapshot success/failure dealing with inconsistent schemas
ENG-6043 have chartbuilder read a plain text CSV rather than a compressed one
For ENG-6043, remove incorrect assertion
For ENG-6043, rename method based on feedback
Merge pull request #1230 from VoltDB/ENG-6043

ENG-6043 SnapshotSave detects better an ongoing snapshot