serde is no longer util dependency (#1534)

* removed old json-tests

* simplify folds in triehash.rs

* removed unused json_aid

* removed unused squeeze.rs

* json branching tests for trie

* removing todos from util

* separated UsingQueue and Table

* further cleanup, removing unused code

* serde serialization of hash moved to rpc module

* uint wrapper for rpc in progress

* serialization of uint moved to rpc module

* updated eth-secp256k1

* updated igd, serde is no longer dependency of util

* loading trie consensus tests

* renamed aliases in rpc imports

ethcore/src/account.rs

@@ -127,7 +127,7 @@ impl Account {
 				SecTrieDBMut would not set it to an invalid state root. Therefore the root is valid and DB creation \
 				using it will not fail.");
 
-			(Filth::Clean, H256::from(db.get(key.bytes()).map_or(U256::zero(), |v| -> U256 {decode(v)})))
+			(Filth::Clean, H256::from(db.get(key).map_or(U256::zero(), |v| -> U256 {decode(v)})))
 		}).1.clone()
 	}
 

ethcore/src/header.rs

@@ -92,10 +92,10 @@ impl PartialEq for Header {
 impl Default for Header {
 	fn default() -> Self {
 		Header {
-			parent_hash: ZERO_H256.clone(),
+			parent_hash: H256::default(),
 			timestamp: 0,
 			number: 0,
-			author: ZERO_ADDRESS.clone(),
+			author: Address::default(),
 
 			transactions_root: SHA3_NULL_RLP,
 			uncles_hash: SHA3_EMPTY_LIST_RLP,
@@ -104,10 +104,10 @@ impl Default for Header {
 			state_root: SHA3_NULL_RLP,
 			receipts_root: SHA3_NULL_RLP,
 			log_bloom: ZERO_LOGBLOOM.clone(),
-			gas_used: ZERO_U256,
-			gas_limit: ZERO_U256,
+			gas_used: U256::default(),
+			gas_limit: U256::default(),
 
-			difficulty: ZERO_U256,
+			difficulty: U256::default(),
 			seal: vec![],
 			hash: RefCell::new(None),
 			bare_hash: RefCell::new(None),

ethcore/src/miner/miner.rs

@@ -19,6 +19,7 @@ use std::sync::atomic::AtomicBool;
 use std::time::{Instant, Duration};
 
 use util::*;
+use util::using_queue::{UsingQueue, GetAction};
 use util::Colour::White;
 use account_provider::AccountProvider;
 use views::{BlockView, HeaderView};

ethcore/src/miner/transaction_queue.rs

@@ -87,7 +87,7 @@ use std::cmp;
 use std::collections::{HashMap, BTreeSet};
 use util::numbers::{Uint, U256};
 use util::hash::{Address, H256};
-use util::table::*;
+use util::table::Table;
 use transaction::*;
 use error::{Error, TransactionError};
 use client::TransactionImportResult;