First time I've had a chance to look at this as I've been traveling -- wow -- very cool!
I was wondering if you would consider publishing this with a version number... such as this release might be 3.1-0, and then if you fix a bug or make an update the next version might be 3.1-1, and then if an Arc 3.2 comes out and you port that your version might be 3.2-0, etc.
You can do this in git simply by tagging your branch (e.g. tag arcc3.1-0 or whatever) and then I can pull the source by tag, and/or you could publish your tar file with a name like arcc3.1-0.tar.gz
The version numbering scheme doesn't matter to me; what I'm looking for is a way to say "my hack here works with rntz's arcc version X", and to be to distinguish that from some earlier or later version of your port.
Sad to say, I'm not planning on maintaining this at all. I simply don't have the time now that I'm back at school, and my interest in Arc has been waning for some time now. If I did plan on maintaining it, I'd certainly give some thought to version numbering.