Merge pull request #6720 from paritytech/kvdb_split

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

ethcore/src/migrations/state/v7.rs

@@ -22,7 +22,7 @@ use std::collections::HashMap;
 use bigint::hash::H256;
 use util::Address;
 use bytes::Bytes;
-use kvdb::Database;
+use kvdb_rocksdb::Database;
 use migration::{Batch, Config, Error, Migration, SimpleMigration, Progress};
 use hash::keccak;
 use std::sync::Arc;

ethcore/src/migrations/v10.rs

@@ -26,7 +26,8 @@ use migration::{Error, Migration, Progress, Batch, Config};
 use util::journaldb;
 use bigint::hash::H256;
 use trie::Trie;
-use kvdb::{Database, DBTransaction};
+use kvdb::DBTransaction;
+use kvdb_rocksdb::Database;
 
 /// Account bloom upgrade routine. If bloom already present, does nothing.
 /// If database empty (no best block), does nothing.

ethcore/src/migrations/v9.rs

@@ -18,7 +18,7 @@
 //! This migration consolidates all databases into single one using Column Families.
 
 use rlp::{Rlp, RlpStream};
-use kvdb::Database;
+use kvdb_rocksdb::Database;
 use migration::{Batch, Config, Error, Migration, Progress};
 use std::sync::Arc;