Ticket #1443: show average copying velocity/ETA for whole operation.
Problem description:
Let's consider large directory (~4GB) with relatively small files:
each 1-2MB.
When I try to copy whole directory I would like to see average
copying velocity (and ETA) not only per-file (I just don't see
stats for small files), but for the whole progress.
This commit fixes the issue. Thanks Sergey <sergemp at mail dot ru>
for the initial patch.
Additionally, the minor type accuracy was provided.
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>