(FileProgressStatus): change values to avoid overlapping with B_* values.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
Apply status message for directory size calculation.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
mcviewer: refactoring of percentage display.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
mcviewer: apply status message for search process.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>