* Add the gnupg package and missing dependencies. Update versions of existing dependencies.
* this ended up in the wrong repo
* put versions back, remove uneeded function
* OK ;)
* autopep8
* typo on npth line
* whitespace
Package repositories now look like this:
top-level-dir/
repo.yaml
packages/
libelf/
package.py
mpich/
package.py
...
This leaves room at the top level for additional metadata, source,
per-repo configs, indexes, etc., and it makes it easy to see that
something is a spack repo (just look for repo.yaml and packages).
