Fix "DecodeHexBlk" for mining - make it aware of new block format.
Fix "DecodeHexBlk" for mining - make it aware of new block format.

nlgcoin/guldencoin-official,nlgcoin/guldencoin-official,nlgcoin/guldencoin-official,nlgcoin/guldencoin-official,nlgcoin/guldencoin-official,nlgcoin/guldencoin-official