Remove cluster and replicationValve from cluster manager template.
These instance are not necessary to template.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1584267 13f79535-47bb-0310-9956-ffa450edef68
Add support for cross context session replication to BackupManager.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1584268 13f79535-47bb-0310-9956-ffa450edef68
Remove the unnecessary cross context check. 
It does not matter whether the context that is referenced by other context is set to crossContext=true. 
The context that refers to the different context must be set to crossContext=true.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1584270 13f79535-47bb-0310-9956-ffa450edef68