Modifying code in go ethereum

We depend on go-ethereum and though the project is loaded as vendor/github.com/ethereum/go-ethereum , it actually comes from github.com/status-im/go-ethereum .

The idea is keep all our local changes to go-ethereum in github.com/status-im/go-ethereum and keep them documented and there's a special process to make this happen:

1. Do changes as usual in status-go including go-ethereum in the vendor folder.
2. Clone github.com/status-im/go-ethereum and check out the latest branch like status/1.7.2-stable .
3. Copy your go-ethereum folder from the status-go vendor directory into the newly cloned go-ethereum .
4. Look at git diff and ensure there're only those changes you've intended to make.
5. Commit and push the new changes.
6. Modify https://github.com/status-im/go-ethereum/wiki/Rebase-Geth-1.7.0 so that other's are aware what the commit there is.