Python Library to Inspect and Debug CernVM-FS Repositories

Currently this Python library roughly allows you to do:
* Inspect local and remote CernVM-FS repositories
* Find local Stratum0 repositories
* Check installed CernVM-FS (server) versions
* Read and interpret repository manifest files (.cvmfspublished)
* Download arbitrary repository file objects
* Inspect CernVM-FS file catalog hierarchy
* List directory entries in a directory, single catalog or whole repos
* Inspect repository history (CernVM-FS named snapshots)

It allows for packaging using `setuptools`, though to build an RPM one needs to use `./buildrpm.sh`.