e2fsck: update the backup superblocks if the feature bitmasks are changed

If e2fsck adds or deletes any of the feature bitmasks, clear
EXT2_FLAG_MASTER_SB_ONLY so the backup superblocks are updated when
e2fsck finishes.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
4 files changed