* Added support for uncrustify 0.67.
Since the build system changed for uncrustify at version 0.64,
I had to change the package from an AutotoolsPackage to a plain
Package and use @when annotations to build the packages differently.
* Removed blank line at end of file
* Added support for python2.6 in uncrustify configuration.
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).
