* fixes#967
* Version bump to 0.9.1
- Bugfixes for spack find
- 0.9.1 can read specs from current develop.
* Don't assume spack is in the path when building docs.
* Remove PKG_CONFIG_PATH from tmux configure
* Change tmux to AutotoolsPackage
* Correct link to libtinfo in tmux
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).
