git-p4: show progress as an integer

git-p4: show progress as an integer

When importing files from Perforce, git-p4 periodically logs the
progress of file transfers as a percentage. However, the value is
printed as a float with an excessive number of decimal places.

For example a typical update might contain the following message:

Importing revision 12345 (26.199617677553135%)

This patch simply rounds the value down to the nearest integer
percentage value, greatly improving readability.

Signed-off-by: Joel Holdsworth <jholdsworth@nvidia.com>
Acked-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>