clone: quell the progress report from init and report on clone

clone: quell the progress report from init and report on clone

Currently, a local git clone reports only initializing an empty
git dir, which is potentially confusing.

Instead, report that cloning is in progress and when it is done
(unless -q) is given, and suppress the init report.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>