Updates to Scala 2.10.3, bumps version to 0.4.0
Updates UpdateScalaIDEManifests to work with Scala's osig bundles

It assumes that the relevant version of Scala is available in the m2repo.
Switch to Scala's bundles in UpdateAddonManifests

And adds test
Merge pull request #8 from skyluc/wip/scala-osgi-support

UpdateScalaIDEManifests working on Scala's osgi bundles