Move the BlockInfo trait to new crate

Contains code extracted from ethcore that defines `Machine`, `Externalities` and other execution related code.

…ropriate

* master:
  Allow default block parameter to be blockHash (#10932)
  Enable sealing when engine is ready (#10938)
  Fix some warnings and typos. (#10941)

* master:
  unify loading spec && further spec cleanups (#10948)
  refactor: Refactor evmbin CLI (#10742)
  journaldb changes (#10929)

* master:
  Fix compiler warnings in util/io and upgrade to edition 2018 Upgrade mio to latest (#10953)

Initial version of extracted Engine trait

Cleanup Executed as exported from machine crate

Cleanup

Sort out default impls for EpochVerifier

Fix Histogram

Don't export ethcore::client::*

Use types from the engine crate
Explicit exports from engine::engine

…, ScheduleInfo, StateClient

* master:
  Extract Machine from ethcore (#10949)
  removed redundant state_root function from spec, improve spec error types (#10955)
  Add support for Energy Web Foundation's new chains (#10957)
  [evmbin] add more tests to main.rs (#10956)

* master:
  Extract the Engine trait (#10958)
  Better error message for rpc gas price errors (#10931)
  [.gitlab.yml] cargo check ethcore benches (#10965)
  Verify transaction against its block during import (#10954)
  [evmbin] fix compilation (#10976)
  Update to latest trie version. (#10972)
  [blooms-db] Fix benchmarks (#10974)
  Fix ethcore/benches build. (#10964)
  tx-pool: accept local tx with higher gas price when pool full (#10901)
  Disable unsyncable expanse chain (#10926)

Cleanup

* master:
  Fix rlp decode for inline trie nodes. (#10980)
  Private contract migration and offchain state sync (#10748)
  manual publish jobs for releases, no changes for nightlies (#10977)

* master:
  Fix rlp decode for inline trie nodes. (#10980)
  Private contract migration and offchain state sync (#10748)
  manual publish jobs for releases, no changes for nightlies (#10977)

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

…ain uses

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* master:
  Add a 2/3 quorum option to Authority Round. (#10909)
  Fix rlp decode for inline trie nodes. (#10980)
  Private contract migration and offchain state sync (#10748)
  manual publish jobs for releases, no changes for nightlies (#10977)

* master:
  Configuration map of block reward contract addresses (#10875)

cleanup

…m-ethcore

* dp/chore/extract-clique:
  Configuration map of block reward contract addresses (#10875)
  Update ethcore/src/snapshot/consensus/mod.rs
  Add a 2/3 quorum option to Authority Round. (#10909)
  Missing import
  Rename supports_warp to snapshot_mode
  Introduce Snapshotting enum to distinguish the type of snapshots a chain uses
  Add an EngineType enum to tighten up Engine.name()
  signers is already a ref
  Update ethcore/engines/clique/src/lib.rs
  Update ethcore/engines/ethash/Cargo.toml
  Update ethcore/engines/basic-authority/Cargo.toml
  Update ethcore/block-reward/Cargo.toml

* master:
  Extract engines to own crates (#10966)

…out-ClientIoMessage

* dp/chore/extract-spec-from-ethcore:
  double semi
  Extract engines to own crates (#10966)
  Fix import
  missing import
  Configuration map of block reward contract addresses (#10875)
  Update ethcore/src/snapshot/consensus/mod.rs
  Add a 2/3 quorum option to Authority Round. (#10909)
  Missing import
  Rename supports_warp to snapshot_mode
  Introduce Snapshotting enum to distinguish the type of snapshots a chain uses
  Add an EngineType enum to tighten up Engine.name()
  signers is already a ref
  Update ethcore/engines/clique/src/lib.rs
  Update ethcore/engines/ethash/Cargo.toml
  Update ethcore/engines/basic-authority/Cargo.toml
  Update ethcore/block-reward/Cargo.toml