Paid software support and seems to be the way to go, but I don't think this really works for this project.
If you know of a company who could support Rui, then please let him know.
I believe he decided to do things this way.. one man show is always problematic (atleast it is easy to go back to lld if anything happens to the author or the project itself)
So Google only has copyright over the portions their employees have contributed.