- OSD-replication rewritten

- tests adapted => replication passes tests
- obsolete code removed
- new write-method in StorageStage which is disabling GMax (little hack :/ )
- added "old" methods to XLocation and Replica

git-svn-id: https://xtreemfs.googlecode.com/svn/trunk@322 f8528748-c2c0-11dd-ba5c-d3b7c2b3b534