separated kvdb into 3 crates: kvdb, kvdb-memorydb && kvdb-rocksdb, #6693

ethcore/src/client/config.rs

@@ -21,7 +21,7 @@ use std::fmt::{Display, Formatter, Error as FmtError};
 use mode::Mode as IpcMode;
 use verification::{VerifierType, QueueConfig};
 use util::journaldb;
-use kvdb::CompactionProfile;
+use kvdb_rocksdb::CompactionProfile;
 
 pub use std::time::Duration;
 pub use blockchain::Config as BlockChainConfig;