servers-DIR: fixed a bug that enables the automated failover mechanism to use...

servers-DIR: fixed a bug that enables the automated failover mechanism to use 'null' as an address for reconnect

git-svn-id: https://xtreemfs.googlecode.com/svn/trunk@1827 f8528748-c2c0-11dd-ba5c-d3b7c2b3b534