- Adds the -c option to control cleaning/rebuilding of projects
- Adds Vom swap files to gitignore
- Adds test to verify the behavior of list buckets for an undefined
  bucket type
- Modifies reset-current-env.sh to accept a Riak version on the command
  line and provide usage information
- Modifies reset-current-env.sh to source bash through env and to bail
  on error by default