* Update ChangeLog to reflect minor last-minute commits.
* Modify build-dist.sh to create both zip and tgz files
* Add notable changes to Upgrade-Notes
Upgrade-Notes includes v2 to v3 upgrade changes that users should be
aware of.
The updated top-level README helps point users to online support
locations.
Signed-off-by: Josh Cepek <josh.cepek@usa.net>