Import Facebook's RocksDB
Move RocksDB repo to external/
*Experimental* Initial implementation of IGNSDK RocksDB API
debian/control: Add zlib1g-dev, libbz2-dev, and libsnappy-dev as builddeps
Update IGNSDK RocksDB API
Update IGNSDK RocksDB API #2
Merge branch 'rocksdb-support'