Auto-DB Backup

[Wayne Workman]

I think it’s a good idea for the FOG Trunk installer to automatically backup the DB before it touches anything else. And I would like the backup to be labeled with the previous installed revision number and the date of the backup.

I’d like for these to be stored inside of /opt/fog/

I’m happy to code this myself - but I just need help with getting the revision number from the previous version.