- added main method to StandalonePublisher creating artifact.xml/jar and content.xml/jar from given (old) Eclise update site.
- when compressed is set to true, artifact.jar and content.jar are created directly. Removed jar task in build script, as these are no longer necessary
Update site is now build including Eclipse p2 metadata (content.jar and artifact.jar). These files are required by some tools, such as Tycho (a maven plugin making p2 update sites available as maven repositories, see http://eclipse.org/tycho).