Fixing a regression introduced in rev1.72 by connecting cd9660 to the
external mounting program list as well; otherwise, entry like following
in /etc/fstab wouldn't work:

	/dev/acd0	/mnt/cdrom	cd9660	ro,-C=big5	0	0

Index: mount.c
===================================================================
RCS file: /home/ncvs/src/sbin/mount/mount.c,v
retrieving revision 1.74
diff -u -p -r1.74 mount.c
--- mount.c	21 Nov 2005 22:07:54 -0000	1.74
+++ mount.c	24 Nov 2005 00:45:27 -0000
@@ -129,7 +129,7 @@ use_mountprog(const char *vfstype)
 	 */
 	unsigned int i;
 	const char *fs[] = {
-	"mfs", "msdosfs", "nfs", "nfs4", "ntfs",
+	"cd9660", "mfs", "msdosfs", "nfs", "nfs4", "ntfs",
 	"nwfs", "nullfs", "portalfs", "reiserfs", "smbfs", "udf", "umapfs",
 	"unionfs",
 	NULL