Comment 17 for bug 435183

Debian now has a standard for this: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/

The next step is to specify how the "License:" fields in a package's debian/copyright should be aggregated if necessary, and summarized as a single line of text. For example, "License: Open source (GPL 3, MPL 1.1, and others)".