Refactored block & Transaction

cmd/ethereum/repl/repl.go

cmd/utils/cmd.go

cmd/utils/vm_env.go

core/block_manager.go

core/chain_manager.go

core/filter.go

core/genesis.go

core/types/block.go

core/types/block_test.go

core/types/transaction.go

core/vm_env.go

eth/backend.go

eth/protocol.go

miner/miner.go

pow/block.go

pow/ezp/pow.go

xeth/js_types.go

xeth/pipe.go

xeth/vm_env.go