* Protobuf: CMake
This rebuilds protobuf to be build with CMake,
so cmake config packages are created and installed, too.
Unfurtunately, this drops support for protobuf < 3.
* Protobuf CMake: Add .pc files
* libprotobuf.a: -fPIC
* Protobuf: Minor Updates
Updates from upstream review and planned patch inclusion.
* Added a package for the MDAnalysis toolkit.
* Added the hash for the 1.0 release of caffe and put in a conflict
statemet indicating that protobuf requires a c++11 compiler.
* Changed minimum version number.
* Tweaked the minimum version number.
* Fixed flake8 error.
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).
