Dan, for reference, there were recently articles that distros derivating
their work from Debian were asked by the FSF to provide the source code
even though they didn't do any changes to the packages created by
Debian. Reason was that Debian might die and the source code wouldn't be
available anymore. Our situation is *possibly* comparable.
Do you have links to these articles? SimplyHTML cannot disappear as long as it is on SourceForge. And if SourceForge would disappear, so would FreeMind. So this is most probably practically irrelevant argument.
If indeed GNU GPL would
require us to include in our CVS all the source code of all the libraries that we use, we would have in the extreme to include the source code of JavaRE in our CVS ;).