Remove some dead links or point them to archive.org while at it. All
updated links have been verified.
Change-Id: Icf02167a13d5fe9dfce39ea57525b3f185554c9d
Reviewed-on: https://code.wireshark.org/review/34028
Petri-Dish: Peter Wu <peter@lekensteyn.nl>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>