Minor daily release update
Fix issues #23, #24 and #22 for oud_export.sh as well oud_backup.sh
Enhance oud_export.sh and oud_backup.sh
- in Verbose mode the output of the backup, export, tar commands is cat to STDIN
- -f allows to specify an alternative backup or export folder
- Check if backup / export folder is writable
- recreate backup / export folder
- move oud_xxx.log from /tmp to the backup folder
- oud_backup.sh does now backup the whole logs folder