dissolve util (#7460)

* ethereum-types refactor in progress

* ethereum-types refactor in progress

* ethereum-types refactor in progress

* ethereum-types refactor in progress

* ethereum-types refactor finished

* removed obsolete util/src/lib.rs

* removed commented out code

ethcore/src/client/chain_notify.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use bigint::hash::H256;
+use ethereum_types::H256;
 use bytes::Bytes;
 
 /// Represents what has to be handled by actor listening to chain events

ethcore/src/client/client.rs

@@ -26,15 +26,13 @@ use itertools::Itertools;
 use hash::keccak;
 use timer::PerfTimer;
 use bytes::Bytes;
-use util::{Address, DBValue};
 use journaldb;
 use util_error::UtilError;
 use trie::{TrieSpec, TrieFactory, Trie};
-use kvdb::{KeyValueDB, DBTransaction};
+use kvdb::{DBValue, KeyValueDB, DBTransaction};
 
 // other
-use bigint::prelude::U256;
-use bigint::hash::H256;
+use ethereum_types::{H256, Address, U256};
 use basic_types::Seal;
 use block::*;
 use blockchain::{BlockChain, BlockProvider,  TreeRoute, ImportRoute};

ethcore/src/client/evm_test_client.rs

@@ -18,8 +18,7 @@
 
 use std::fmt;
 use std::sync::Arc;
-use bigint::prelude::U256;
-use bigint::hash::H256;
+use ethereum_types::{H256, U256};
 use journaldb;
 use {trie, kvdb_memorydb, bytes};
 use kvdb::{self, KeyValueDB};

ethcore/src/client/test_client.rs

@@ -23,11 +23,10 @@ use std::mem;
 use itertools::Itertools;
 use rustc_hex::FromHex;
 use hash::keccak;
-use bigint::prelude::U256;
-use bigint::hash::H256;
+use ethereum_types::{H256, U256, Address};
 use parking_lot::RwLock;
 use journaldb;
-use util::{Address, DBValue};
+use kvdb::DBValue;
 use kvdb_rocksdb::{Database, DatabaseConfig};
 use bytes::Bytes;
 use rlp::*;

ethcore/src/client/trace.rs

@@ -1,7 +1,7 @@
 
 //! Bridge between Tracedb and Blockchain.
 
-use bigint::hash::H256;
+use ethereum_types::H256;
 use header::BlockNumber;
 use trace::DatabaseExtras as TraceDatabaseExtras;
 use blockchain::{BlockChain, BlockProvider};

ethcore/src/client/traits.rs

@@ -33,9 +33,7 @@ use trace::LocalizedTrace;
 use transaction::{LocalizedTransaction, PendingTransaction, SignedTransaction};
 use verification::queue::QueueInfo as BlockQueueInfo;
 
-use bigint::prelude::U256;
-use bigint::hash::H256;
-use util::Address;
+use ethereum_types::{H256, U256, Address};
 use bytes::Bytes;
 use hashdb::DBValue;