This is just a guess, so sorry if it's no help. My suggestion is to compare the header lines with the original files (/etc/cups/classes.conf with etc/cups/classes.conf.rpmsave, etc.) and see if you can make sense of them. I don't have SUSE installed right now, but I beleive the message is base on the fact that the old files and the new files were different. The differences were placed in the files you've listed. I also think there's a difference between the endings, that rpmsave means that your original file had an extra line, and rpmnew means that the new file had an extra line.
More than likely, the new and old files were merged when you upgraded, so this is a listing of differences so you can make adjustments as needed, in case of problems or incorrect assumptions by the upgrade program. When you're done, just remove the .rpmsave/.rpmnew files, and you won't get this error, as the system probably just looks for the extention when it's booting.
Like I said, however, this is just a rusty memory, so I might be off on this...
