Fixed kernel and initrd filenames in grub.cfg

grub/grub.cfg

@@ -54,9 +54,9 @@ set gfxpayload=keep
 # Start a Debian style Casper Kernel
 function LoadCasper {
 	echo	"Loading kernel${bits} (takes up to 2 minutes)"
-	linux	/casper/vmlinuz${bits} boot=casper file=/cdrom/preseed/kubuntu.seed ${cmdline} unionstack=lip-common.squashfs:lip-${arch}.squashfs nosplash verbose --
-	echo 	"Loading initrd${bits} (takes up to 5 minutes)"
-	initrd	/casper/initrd${bits}.lz
+	linux	/casper/vmlinuz$-${arch} boot=casper file=/cdrom/preseed/kubuntu.seed ${cmdline} unionstack=lip-common.squashfs:lip-${arch}.squashfs nosplash verbose --
+	echo 	"Loading initrd-${arch} (takes up to 5 minutes)"
+	initrd	/casper/initrd-${arch}.lz
 	echo 	"Starting kernel"
 }