rdsquashfs: reorder unpack flags, add flag to produce listing

The listing command has been used successfully to do the following:

 - generate a prestine file system using gensquashfs
 - repeate multiple times:
   - generate a listing from the file system
   - unpack only the regular files from the file system
   - generate a new file system from the listing
   - run `diff` on the old and new filesystem and admire that they
     are identical
   - replace the old file system with the new one, since they are
     identical

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

0 files changed, 0 insertions, 0 deletions