Merge branch 'master' into fo-6418-dont-export-bigint

# Conflicts:
#	dapps/src/tests/helpers/registrar.rs
#	ethcore/evm/src/interpreter/shared_cache.rs
#	ethcore/light/src/client/header_chain.rs
#	ethcore/light/src/client/mod.rs
#	ethcore/light/src/net/mod.rs
#	ethcore/light/src/on_demand/request.rs
#	ethcore/light/src/on_demand/tests.rs
#	ethcore/light/src/provider.rs
#	ethcore/node_filter/src/lib.rs
#	ethcore/src/block.rs
#	ethcore/src/blockchain/blockchain.rs
#	ethcore/src/client/test_client.rs
#	ethcore/src/engines/authority_round/mod.rs
#	ethcore/src/engines/basic_authority.rs
#	ethcore/src/engines/mod.rs
#	ethcore/src/engines/tendermint/mod.rs
#	ethcore/src/engines/validator_set/contract.rs
#	ethcore/src/engines/validator_set/multi.rs
#	ethcore/src/engines/validator_set/safe_contract.rs
#	ethcore/src/engines/vote_collector.rs
#	ethcore/src/miner/external.rs
#	ethcore/src/miner/miner.rs
#	ethcore/src/miner/service_transaction_checker.rs
#	ethcore/src/miner/work_notify.rs
#	ethcore/src/pod_account.rs
#	ethcore/src/pod_state.rs
#	ethcore/src/snapshot/block.rs
#	ethcore/src/snapshot/consensus/work.rs
#	ethcore/src/snapshot/mod.rs
#	ethcore/src/snapshot/service.rs
#	ethcore/src/spec/spec.rs
#	ethcore/src/state/backend.rs
#	ethcore/src/trace/db.rs
#	ethcore/src/verification/queue/mod.rs
#	ethcore/src/verification/verification.rs
#	parity/informant.rs
#	rpc/src/v1/helpers/dispatch.rs
#	rpc/src/v1/helpers/light_fetch.rs
#	rpc/src/v1/helpers/signing_queue.rs
#	rpc/src/v1/impls/eth.rs
#	rpc/src/v1/impls/eth_filter.rs
#	rpc/src/v1/impls/eth_pubsub.rs
#	rpc/src/v1/impls/light/eth.rs
#	rpc/src/v1/impls/signing.rs
#	rpc/src/v1/tests/helpers/miner_service.rs
#	rpc/src/v1/tests/helpers/snapshot_service.rs
#	rpc/src/v1/tests/helpers/sync_provider.rs
#	rpc/src/v1/tests/mocked/eth.rs
#	stratum/src/lib.rs
#	sync/src/blocks.rs
#	sync/src/chain.rs
#	sync/src/light_sync/mod.rs
#	sync/src/tests/helpers.rs
#	sync/src/tests/snapshot.rs
#	updater/src/updater.rs
#	util/src/lib.rs
#	util/triehash/src/lib.rs

util/network/src/tests.rs

@@ -19,7 +19,8 @@ use std::sync::atomic::{AtomicBool, Ordering as AtomicOrdering};
 use std::sync::Arc;
 use std::thread;
 use std::time::*;
-use util::{Bytes, Mutex};
+use parking_lot::Mutex;
+use util::Bytes;
 use io::TimerToken;
 use ethkey::{Random, Generator};