e2fsck: resync jbd2 revoke code from Linux 3.16

Synchronize e2fsck's copy of revoke.c with the kernel's copy in
fs/jbd2.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
5 files changed