* triedb cleanup

* factor out common portion of trie query

* allocate far fewer times in node decoding

* fix bench compilation

* introduce OwnedNode variant to make iter fast again

* generalize recorder trait to Query

* decode trie outputs cost-free in state

* test for passing closure as query

* Removing old transactions from the queue

* Addressing grumbles

* add block rewards

* imports

* return old trie values on insert and remove

* fix json tests

* Moving logs to separate, testable function

* Adding test

* Fixing log index

* Adding transaction log index

* Fixing rpc tests

* Making interface of  a bit cleaner.

* owning views of blockchain data

* port blockchain and client traits to owning views

* fix ethcore tests

* use strong headers and bodies in ethcore_light

* port ethsync to use owning views

* port rpc to owning views

* port parity informant and blockchain export

asynchronous rob authored Dec 27, 2016 and Arkadiy Paronyan committed Dec 27, 2016

* initial untry sweep

* restore try in ipc codegen, fix inference

* change a few missed try instances

* constructor spec

* execute under wrong address

* create under correct address

* revert

* move genesis block lookup

* remove env_logger

* Allow sync reorg up to pruning history size

* Peer difficulty tracking

* Abort downloading block if received with NewBlock

* Set pruning history to 1200

* Renamed history size field

* configurable CHAIN_ID

* set CHAIN_ID for Ethereum Classic

* derive(Binary) -> binary

* ethcore types refact

* fixup ethcore

* make binary optional

* fix common types

* fix updater

* remove condition

Closes #3861