Alternative script for generating release note information about package changes and FCL usage. Uses the sources.csv and sysdef, so doesn't need to access the release archive to access previous package lists or names, and can work concurrently with other build analysis steps.

Added the links to the website for each package (may need some improvements).

Corrected new argument checking.

Changed the hard-coded default for the releases location, so at least tonight's candidate build will work OK.