Golang 解决 golang.org/x/ 下包下载不下来的问题

因为众所周知的缘由，golang在下载golang.org的包时会出现访问不了的状况。尤为是x包，不少库都依赖于它。因为x包在github上都有镜像，咱们能够使用从github.com上先clone下来，再作软连接的方式曲线救国。

mkdir -p $GOPATH/src/github.com/golang/
git clone https://github.com/golang/sys.git $GOPATH/src/github.com/golang/sys
git clone https://github.com/golang/net.git $GOPATH/src/github.com/golang/net
git clone https://github.com/golang/text.git $GOPATH/src/github.com/golang/text
git clone https://github.com/golang/lint.git $GOPATH/src/github.com/golang/lint
git clone https://github.com/golang/tools.git $GOPATH/src/github.com/golang/tools
git clone https://github.com/golang/crypto.git $GOPATH/src/github.com/golang/crypto

ln -s $GOPATH/src/github.com/golang/ $GOPATH/src/golang.org/x