memalign: fix off-by-one bug in alignment

Signed-off-by: Jens Axboe <axboe@fb.com>
Checksumming updates

Signed-off-by: Jens Axboe <axboe@fb.com>
Add small tool to check for dedupable contents in a file/device

Signed-off-by: Jens Axboe <axboe@fb.com>
dedupe: improve wording in output

Signed-off-by: Jens Axboe <axboe@fb.com>
dedupe: print progress indicator

Signed-off-by: Jens Axboe <axboe@fb.com>