Revert back copyright headers

The copyright was changed in
Ic8279755f0188ab53253a62322fcccf1c17b6aaf

Change-Id: If4251d13b6e653d49913d1c50044177491326edc
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>