remove use of ${user.home}/.m2/repository from build

currently, the build relies on the repository being in $

/.m2/repository, which mine is not (overridden by settings.xml).

The attached patch removes the use of antrun in some cases and uses the dependencies plugin to copy the files around as they were before. The clean plugin is added to the root to replace the deletes.

I haven't removed all the usages of antrun as the other plugin is more verbose in the way it is used.

I think, ideally, the assembly plugin at the root would construct the lib directory. Maybe some other day