OK, just as I suspected the reply was generally not very encouraging. Aside from promising to to make one available for 2.8.1 he said that:
- He hasn't done any work on 2.5.2 at all
- He won't attempt to explain individual patches as it's too complicated
- He doesn't have time to go hunting down the font size table
The one really encouraging thing he said was a possibility of a patch generator, but no time frame for that.