Have release builds create a symlink to "latest"

[turesheim]

Feature Request

A new folder, e.g. 2.0.3 is created on the download server on a new release build, so that we get http://download.eclipse.org/texlipse/2.0.3/. This is fine, but for people to discover the release, they have to be aware of it. The build job should create a latest link to 2.0.3 in addition so that one can rely on http://download.eclipse.org/texlipse/2.0.3/. This also means there are a few links that does not have to be updated on each release.