(http://ompldr.org/vYjV2Nw)
Created some normalmaps for these textures and packaged them for sauerbraten.
Did this because i had nothing else to do at the time :P
Found them here: http://www.freeseamlesstextures.com/texture_gallery/index.htm
There is also a basic map/config inside the attached archive if you want to check them out in-game.