* util/i386/pc/grub-setup.c (usage): Warn against running grub-setup

directly, and recommend grub-install instead.
* util/sparc64/ieee1275/grub-setup.c (usage): Likewise.

util/sparc64/ieee1275/grub-setup.c

@@ -407,6 +407,8 @@ Usage: %s [OPTION]... DEVICE\n\
 \n\
 Set up images to boot from DEVICE.\n\
 DEVICE must be a GRUB device (e.g. `(hd0,1)').\n\
+\n\
+You should not normally run %s directly.  Use grub-install instead.
 \n\
   -b, --boot-image=FILE   use FILE as the boot image [default=%s]\n\
   -c, --core-image=FILE   use FILE as the core image [default=%s]\n\