* user guide: fixed error in the documentation of OSD and replica selection policies

* MRC: changed 'dcmap' sorting policy, such that it accepts the "X.addresses=..." as well as "addresses.X=..." notations for the data center map, fixed minor issue in FQDN policy

git-svn-id: https://xtreemfs.googlecode.com/svn/trunk@2792 f8528748-c2c0-11dd-ba5c-d3b7c2b3b534