In GridFS key-value store, add a way to use Bzip2 instead of Gzip because GridFS is to be used for storing CoreNLP annotations
In GridFS key-value store, add a way to use Bzip2 instead of Gzip because GridFS is to be used for storing CoreNLP annotations

berkmancenter/mediacloud,AchyuthIIIT/mediacloud,berkmancenter/mediacloud,AchyuthIIIT/mediacloud,AchyuthIIIT/mediacloud,AchyuthIIIT/mediacloud,AchyuthIIIT/mediacloud,AchyuthIIIT/mediacloud,berkmancenter/mediacloud,AchyuthIIIT/mediacloud,berkmancenter/mediacloud,AchyuthIIIT/mediacloud,berkmancenter/mediacloud,AchyuthIIIT/mediacloud