Yeah, I'm not really sure that is an important error from checkconfig.

So, if you end up trying to push from your Dreamhack, and you used this URL to clone:

git clone https://github.com/USERNAME/dw-free.git $LJHOME

Instead of one that has an authentication added to it:

git clone https://USERNAME@github.com/USERNAME/dw-free.git $LJHOME

It won't know what to do to authenticate when you try and push changes back--although cloning will have worked just fine! But, you can change the URLs in dw-free and dw-nonfree without having to reclone things by using the remote set-url command:

cd $LJHOME
git remote set-url origin https://ninetyd@github.com/ninetyd/dw-free.git $LJHOME
cd $LJHOME/ext/dw-nonfree
git remote set-url origin https://ninetyd@github.com/ninetyd/dw-nonfree.git $LJHOME

That way, when you go to push something, it will ask you for a password and you can provide it.