ENG-5227 Fix index rescan.
ENG-5227 Even better index reactivation fix, working much.
ENG-5227 Fix TestJoin.testSnapshotSaveRestore.
ENG-5227 Remove predicate argument to handleReactivation().
Merge pull request #812 from VoltDB/ENG-5227

ENG-5227 Fix index reactivation
Merge branch 'master' into ENG-4622-5094