Added automatically generated revsion information feature $Id:$

In order to get the svn information updated automatically 
svn propset svn:keywords "Id" <filename> 
has to be set!

git-svn-id: https://svn.mdt.tu-berlin.de/Verwaltung/LaTeX@38 25a4be7b-f1fc-0310-ab71-aec12a0be8aa