The attached file will allow generation of Eclipse 3.x versions of the plugin.xml as well as the manifest.mf files. The current Eclipse based help generator does not generate the newer formats. This leverages the existing formats, and adds a couple of paramaters to control whether the manifest is created as well as if the plugin.xml is created. There are times when you may not want to recreate the plugin.xml or manifest.mf if you already have these created.
This change is licensed under an EPL 1.0 license. I wrote all the code for this, and leverage the existing eclipse.xsl as an import.