Undead Parish Mural Texture Fix

By default, the texture is nearly incomprehensible. It's very low res and sticks out like a sore thumb. I was able to track down the original source sketch (it's in the Dark Souls Design Works!) and working from a scan of it, implemented it into the game.

There are two options, the normal version and one with a different normal map. The second version is more easily readable so that you can more readily see what it is compared to the original sketch, but the first version is more faithful to the actual representation in game so I'm leaving that as the default. Choose as you please.