Since I get some questions on how to find this plugin I thought I would post the URL. The plugin can be downloaded here (link to full URL at dev.eclipse.org) or you can get it via this http://tinyurl.com/w97so as long as it works... This is even more relevant where the link posted in the Integration Guide of the Sametime 7.5 Java SDK doesn't work anymore.
What brilliant person decided to publish a document with link pointing directly into CVS with specifying the revision? I would say that a short redirection link via ibm.com would make much more sense!