make some tiles (top of pipes, top of snowbg) unisolid as that feels better in levels...
[supertux.git] / data / levels /
drwxr-xr-x   ..
drwxr-xr-x - bonus1
drwxr-xr-x - contribs
drwxr-xr-x - misc
drwxr-xr-x - test
drwxr-xr-x - world1
drwxr-xr-x - world2