Suppose that you want to provide support for a bunch of open source codebut are not the primary author or maintainer. Inevitably you will haveto patch bugs and add features on your own in some way (and perhaps fixthe code to port it to your environment or whatever). This leads to aquestion: where is the dividing line between merely supporting the codeand actually forking your own version of the code?

To me, the dividing line is whether you can get your changes acceptedupstream and applied to the