Remove invalid flush commands, flush should only occur when file
has been completely written. This is already handle, remove these calls.
Ensure data gets written after EOF in correct order and before close.
Remove gname and uname from sum for hash compatibility.
Update tarsum tests for gname/uname removal.
Return valid length after eof.
Signed-off-by: Derek McGowan <derek@mcgstyle.net>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
a422774e59