More improvements to split & pruned block log handling

Łukasz Bujakrequested to merge
split-block-log-4 into develop
  • The new meaning of 0 value of block-log-split has been implemented. When set, 0 blocks are stored in block log and only the head irreversible block is available (stored separately in state). Obviously no replay is possible then.
  • Improved hived block-log auto-splitting feature in accordance to #686 (closed)
    See auto_split unit test for supported scenarios.
  • Fixed state corruption when interrupted replay from split log
Edited by Łukasz Bujak

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