I know using different loging levels demonstrate the use of xbt_log but it is not...

I know using different loging levels demonstrate the use of xbt_log but it is not really the purpose of this example and has troubled some guys. So let's make everything uniform. Beside, using an experimental resource model (KCCFLN05) is not a good idea as many peple just cut and paste this exemple and have troubles because this model is not fully functionnal.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/simgrid/simgrid/trunk@1554 48e7efb5-ca39-0410-a469-dd3cf9ba447f