Merge remote-tracking branch 'origin/master' into dp/make-CallExecutors-generic-over-hasher-and-rlpcodec

* origin/master:
  Fixed sync stalling when import queue is full (#691)
  New extrinsic dispatch model (#678)
  remove parachain's Cargo.lock (#682)
  Implement json metadata for outer events (#672)
  Improvements to the Kademlia system (#688)
  Use BufReader and BufWriter (#684)
  Switch to using parity/rust:substrate which has rust nightly-2018-08-31 (#686)
  Update to latest libp2p (#673)
  Implement storage json metadata (#670)
  impl MaybeEmpty for H256 and u64 (aka AccountId in prod/tests) (#665)
  Speedup compilation (#671)
  Remove requirement of function indices for decl_module! (#666)
  DigestItem trait (v2) (#650)

* System and Balances switched to new call model

* Fixed up executive for new pardigm

* Consensus works with Origin

* Timestamp ported over

* Session now compatible

* Ported staking

* Treasury compatible

* Expunge MaybeEmpty

* Make democracy work

* Council compatible

* Remove some aux-dispatch stuff and fix balances

* Rename aux -> origin, fix contracts

* Fix test

* Fix example

* Update macro to remove superfluous cruft

* Make work with new macro

* Tests

* Fix some tests

* Tests

* Fix grumbles

* Final grumble

Progress on: #535

* Use BufReader and BufWriter

* Add TODOs

RuntimeInfo is not generic

* `decl_storage!` exposes json metadata about the storage

The metadata can be accessed by calling `store_json_metadata()`.

* Hide internal macros in the documentation

* Include the function documentation in the store json metadata

* Adapt the storage declarations to use doc comments

* impl MaybeEmpty for H256 and u64 (aka AccountId in prod/tests)

* binaries

* DigestItem trait

* removed autoimpl in impl_outer_log

* StubDigestItem -> ()

* master:
  Revert "Install llvm-tools-preview component (#643)" (#644)
  Revert "fix wasm executor compile error (#631)" (#642)
  Fetch parity-common dependencies from crates (#617)
  limit retry count in OnDemand (#513)
  Minor refactor for staking module (#659)

This reverts commit ad89579f.

This reverts commit 7c18bb60.

* Fetch parity-common dependencies from crates

* Update triehash

* Fix code to fit latest triehash
Fetch kvdb-rocksdb from crates

* type params

* lockfile

* lockfiles

* wasm binaries and lockfile

* Somerhing wrong.

* My attempt to fix

* cfg_attr for serde

* Fix tests

* master:
  Upgrade to libp2p master (#660)
  Include function comments into modules `json_metadata` (#657)
  Replace old headers with CHT in light clients (#512)
  Fix build
  Introduce treasury and document (#646)
  Off-the-table staking preference (#656)
  Implement function `json_metadata` in `decl_module!` (#654)
  Fix warnings in networking (#652)
  Add a reputation system (#645)
  Check for pruned block state (#648)

* Include function comments into modules `json_metadata`

All doc comments (with `///`) are included in the description field of
the function.

Progress on #535

* Replace spaces with tabs

* storage proofs

* CHT

* Introduce treasury and document

* Revert bad changes

* More reversions

* Add example crate

- Remove HasPublicAux
- Rename Concrete -> Runtime

* Actually commit stuff

* Changes

* Propagate block number in finalise.

* Fix and build example

* Fixes.

* Fix compilation for treasury.

* Fix the treasury test

* Tests

* Fix.

* Fix tests

* Fix a few grumbles

* Fixes

* Fix grumbles

The new function `json_metadata` returns the module declaration
as a json string.

Progress on: #535