In a moment of sheer brilliance, I remembered that Skylark had written a couple programs that will A) swap your X/O button actions, and B) enable or disable the custom font hack.
In another moment of sheer brilliance, I decided to test them on 2.80, using eLoader and xLoader.
Guess what! They both work.
So if you want to install the font hack or button swap *very* easily, just use these programs.
Remember, to disable the font hack, just run the installer again :)