- Create 'update' script to handle the population of the tree used to
create OSX packages.
- Cleaned out the old tree, because it can now be recreated at will.
- This is the structure that the OSX package requires. Note that the
task binary is 'represented' by an empty file.
- With more time, this could possibly be converted to a tree of symlinks,
but I'm not sure whether PackageManager deals with them as expected.
