DIRInterface: regenerated

Replication: used babuDB replication ability to enable replication for the DIR
xtfs_dirreplicationtool: added to support manual setup and failover of the replication

git-svn-id: https://xtreemfs.googlecode.com/svn/trunk@1203 f8528748-c2c0-11dd-ba5c-d3b7c2b3b534