 Fix listsinceblock.py test (#3). GoldCoin subsidy was 10000 not 50
 Fix listsinceblock.py test (#3). GoldCoin subsidy was 10000 not 50

goldcoin/Goldcoin-GLD,goldcoin/Goldcoin-GLD,goldcoin/goldcoin,goldcoin/goldcoin,goldcoin/Goldcoin-GLD,goldcoin/Goldcoin-GLD,goldcoin/Goldcoin-GLD,goldcoin/goldcoin,goldcoin/Goldcoin-GLD,goldcoin/goldcoin,goldcoin/goldcoin,goldcoin/goldcoin