do not delete data.old automatically. Let user do that.
-rw-r--r-- 3403 .gitattributes
-rw-r--r-- 55 .gitignore
drwxr-xr-x - Docs
-rwxr-xr-x 18919 all
-rwxr-xr-x 1266 check-gitattributes.sh
drwxr-xr-x - data
-rwxr-xr-x 18009 gpl.txt
drwxr-xr-x - misc
-rw-r--r-- 11244 readme.html
drwxr-xr-x - server
-rwxr-xr-x 2112 xonotic-linux-glx.sh
lrwxrwxrwx 20 xonotic-linux-sdl.sh -> xonotic-linux-glx.sh