Comment # 2 on bug 933924 from Takashi Iwai

I also don't know how *.rpmorig were generated.  But this isn't an issue here. 
Such things may happen during development, e.g. a file got corrupted then grub2
package is updated, and it creates either *.rpmorig or *.rpmsave.

The point is that grub2-mkconfig filters only Emacs backup and auto-save files,
but nothing else.  If an editor backs up a file as *.bak, it'll be included,
too.  *.rpmsave and *.rpmorig are backup files, too.

It's a common practice to include only files with specific extension (typically
*.conf) for *.d directory, but it looks too late for now.  The same mistake was
done for /etc/modprobe.d and it was changed later.

Like the earlier modprobe.d, we should exclude some known backup files, too.