Merge eth-go repository into go-ethereum

.gitignore

.travis.yml

LICENSE

README.md

block_pool.go

cmd/LICENSE

cmd/ethereum/cmd.go

cmd/ethereum/flags.go

cmd/ethereum/main.go

cmd/ethereum/repl/console_colors_windows.go

cmd/ethereum/repl/repl.go

cmd/ethereum/repl/repl_darwin.go

cmd/ethereum/repl/repl_linux.go

cmd/ethereum/repl/repl_windows.go

cmd/mist/assets/back.png

cmd/mist/assets/browser.png

cmd/mist/assets/bug.png

cmd/mist/assets/close.png

cmd/mist/assets/debugger/debugger.qml

cmd/mist/assets/ext/big.js