Inconsistency between --disk and --partitions syntax

[madbrain76]

When doing a backup non-interactively on my XU4, the command looks like this :

time ./odroid-backup.pl -t --backup -a --disk mmcblk1 --partitions bootloader,mbr,/dev/mmcblk1p1,/dev/mmcblk1p2 --directory /backup/xu4/odroid-backup

As you can see, the argument to --disk is mmcblk1, without /dev; while for --partitions, each partition has to be prepended with /dev . I found this confusing when using the tool for the first time. It would be better for syntax to be consistent between arguments.