- moved /etc/init.d/xtreemfs-vivaldi to the client sub-package

- set .properties files and cert directory to 0750 and group xtreemfs
- let package managers restart xtreemfs services on install and update, stop at uninstall

git-svn-id: https://xtreemfs.googlecode.com/svn/trunk@1633 f8528748-c2c0-11dd-ba5c-d3b7c2b3b534