Update Ethereum JSON test files and wrappers

tests/block_test.go

...s/files/BlockchainTests/RandomTests/bl201507071825GO.json

tests/files/BlockchainTests/bcBlockGasLimitTest.json

tests/files/BlockchainTests/bcValidBlockTest.json

tests/files/GenesisTests/basic_genesis_tests.json

tests/files/RLPTests/RandomRLPTests/example.json

tests/files/RLPTests/invalidRLPTest.json

tests/files/RLPTests/rlptest.json

tests/files/StateTests/RandomTests/st201507030359GO.json

...s/files/StateTests/stPreCompiledContractsTransaction.json

tests/files/StateTests/stSpecialTest.json

tests/files/StateTests/stSystemOperationsTest.json