Ticket #3196: fix incorrect file counting during move operation.

Problem description:
When files are moved, let's say 10000 for example, MC first copies files
to destination. This is correctly reflected in progress bar and "Files
processed" counter which goes from 1 to 10000. But after when copying
stage is over MC deletes files and "Files processed" goes from 10000 to
20000 which looks weird because it shown like "Files processed:
15232/10000".

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
Rename structure: FileOpTotalContext -> file_op_total_context_t.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
Merge branch '3196_move_file_count'

* 3196_move_file_count:
  Rename structure: FileOpTotalContext -> file_op_total_context_t.
  Ticket #3196: fix incorrect file counting during move operation.