Update stake modifier checkpoints.
Update stake modifier checkpoints.

IOCoin/DIONS,IOCoin/iocoin,IOCoin/DIONS,IOCoin/DIONS,IOCoin/iocoin,IOCoin/iocoin,IOCoin/iocoin,IOCoin/iocoin,IOCoin/DIONS,IOCoin/DIONS,IOCoin/DIONS,IOCoin/DIONS,IOCoin/DIONS