* use standard installation method (conf in /etc, link binary to /usr/local/bin)
* provide bonus hook to create files when problems occurs (additionnally to send emails), allowing monitoring with standard tool (ie xymon and else)
* Possibility to use beta version in file directory: hard coded for the moment, name the file openvz-diff-backups_v0.9.8-beta.tar.gz and use -e beta=true on command line