f2fs-tools: release 1.2.0

This version includes:
- initial fsck and dump tools
- libraries for f2fs
- bug fixes
- etc

Change-Id: I2c4dafa62ae667843a0e2143d37bbf84775e4105
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
fsck: fix orphan node blocks

Previously, fsck handles only the orphan inode block excpet its indirect node
blocks.
This causes false-alarm, unreachable nat entries [xxx].
This patch fixes to cover indirect node blocks in an orphan inode.

Change-Id: I66cb00e8e7539dc07cc0e2018662dec985729506
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
mkfs: remove stale node blocks

If the device does not support discard, we should write zero blocks
to avoid roll-forward recovery.

Change-Id: Ib54e3544ecbcb5f9cf1f79875a30237fd54b852a
Reported-and-tested-by: Huajun Li <huajun.li@intel.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>