message: Added new test for future blocks reacceptance
  Adds a test case for checking reacceptance a previously rejected block
  that was too far in the future.
diff: @@ -700,6 +700,21 @@ class FullBlockTest(BitcoinTestFramework):
  self.send_blocks([b55], True)
  self.save_spendable_output()
  + # The block which was previously rejected because of being "too far(3 hours)" must be accepted 2 hours later.
  + # The new block is only 1 hour into future now and we must reorg onto to the new longer chain.
  + # The new bestblock b48p is invalidated manually.
  + # -> b31 (8) -> b33 (9) -> b35 (10) -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15)
  + # \-> b54 (15)
  + # -> b44 (14)\-> b48 () -> b48p ()
  + self.log.info("Accept a previously rejected future block at a later time")
  + node.setmocktime(int(time.time()) + 2*60*60)
  + self.move_tip(48)
  + self.block_heights[b48.sha256] = self.block_heights[b44.sha256] + 1 # b48 is a parent of b44
  + b48p = self.next_block("48p")
  + self.send_blocks([b48, b48p], success=True) # Reorg to the longer chain
  + node.invalidateblock(b48p.hash) # mark b48p as invalid
  + node.setmocktime(0)
  +
  # Test Merkle tree malleability
  #
  # -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57p2 (16)
  