e2fsck: update encryption support to match upstream

Update the android branch's e2fsck encryption support to fix corrupted
encrypted directories and to support the encryption file system feature
being set in the superblock.

Change-Id: I61949ee58df938c018e9ebc278593ce9332f6f50
Signed-off-by: "Theodore Ts'o" <tytso@google.com>
6 files changed