ok i think none of you got an amd64 or any other 64bit system to test the ebuilds.
there is an error while installing (like i already said to the chanbot(haven't read it right, so i talked to him))
if crystalspace is done you got those directories in /opt/planeshift/crystalspace:

drwxr-xr-x 2 root root 4096 Feb 13 20:33 bin
drwxr-xr-x 3 root root 4096 Feb 13 20:00 etc
drwxr-xr-x 3 root root 4096 Feb 13 20:00 include
drwxr-xr-x 3 root root 4096 Feb 13 20:00 lib64
drwxr-xr-x 4 root root 4096 Feb 13 20:00 share

so far so good, but the cs-config script is looking for the lib directory to get the --libs, --libdir,...
so you need to do a link to emerge cel as well

cd /opt/planeshift/crystalspace
ln -s lib64 lib

and you are ready to install cel.