* Corrected extrae package homepage and url
* Corrected paraver package homepage and url
* To fix 'undefined reference to libintl_dgettext' appearing in extrae package when using binutils+libiberty
* Adding support to previous paraver version and reverting binutils changes to open another PR
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).
