ext4: ignore mount options supported by ext2/3 (but have since been removed)
ext4: ignore mount options supported by ext2/3 (but have since been removed)

Users who tried to use the ext4 file system driver is being used for
the ext2 or ext3 file systems (via the CONFIG_EXT4_USE_FOR_EXT23
option) could have failed mounts if their /etc/fstab contains options
recognized by ext2 or ext3 but which have since been removed in ext4.

So teach ext4 to recognize them and give a warning that the mount
option was removed.

Report: https://bbs.archlinux.org/profile.php?id=33804

Signed-off-by: Tom Gundersen <7c8224529a7c718e876cb2496c973509fde1e50e@jklm.no>
Signed-off-by: "Theodore Ts'o" <4ed386e0495d3e109932df055831d9ec2f824927@mit.edu>
Cc: Thomas Baechler <5f50a84c1fa3bcff146405017f36aec1a10a9e38@archlinux.org>
Cc: Tobias Powalowski <12e798294e1aa5ad03ec94aa630e84d7b2b8a082@googlemail.com>
Cc: Dave Reisner <3c363836cf4e16666669a25da280a1865c2d2874@falconindy.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs