We have not tested. I can try to give you some clues about how test it, here are the files and folders modified from default tomcat 7:
$TOMCAT_HOME/OpenKM.cfg ( need to add )
$TOMCAT_HOME/PropertyGroups.xml ( need to add )
$TOMCAT_HOME/logback.xml ( need to add, but I'm not 100% sure if really we use it )
$TOMCAT_HOME/conf/server.xml ( modified to add database pool and mail pool )
$TOMCAT_HOME/conf/context.xml ( modified to add database pool and mail pool )
$TOMCAT_HOME/conf/loggin.properties ( take a look at this file, I'm not sure if must be added or modified )
$TOMCAT_HOME/lib ( need to add jar libs )
$TOMCAT_HOME/bin ( need to add a lot of thirdparty tools .sh . exe etc.. )
$TOMCAT_HOME/weapps/OpenKM.war ( need to add )
Also you can try to compare tomcat-7.0.61.zip from apache download and ours, looking for the differences between.
