* Snapshot from upstream's 2.5 branch, revision 54476 + CORE-3841: Corrupted database after inserting rows + CORE-3844: Validation not detecting one specific case of index corruption + Fixed regression in the fix for CORE-3777 + CORE-3814: SuperClassic server crashes when performing a database shutdown with forced writes off + CORE-3598: Tracing: add statistics of actions that were after transaction finish + Trace errors raised by failed ON TRANSACTION ROLLBACK and ON DISCONNECT triggers + CORE-3539: Tracing: add ability to log errors that occur in runtime (lock conflicts, PK/UK/FK violations etc.)