Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

* Integration to work with bor

* Turn off validator set check

* disable verifySeal, add skeleton of postExec stage

* Pass around syscall

* Print

* Print more

* Default heimdall values for integration

* restore contract

* Print

* Print

* Print

* Print

* Print

* Print

* Print

* Print

* Fix nonce of system contract

* Remove prints

* Revert some more printing

* More fixes

* Print log

* Fix transfer log

* More printing

* More printing

* Print

* Print

* Print

* Print

* Print

* Print

* Print

* Fix validaor reward

* Remove printing

* Remove more prints

* Less printing

* Fetch validators from heimdall

* Remove syscall from Seal and CalcDifficulty

* Remove syscall from Prepare

* Print

* Remove DNS discovery

* Print apply snapshot

* Print

* Chunk up snapshot generation

* Chunk up snapshot generation

* Better logs when snapshotting

* Handle parents

* Prevent shadowing of snap

* Fix heimdall fetch

* Logging fixes

* Save generated snapshots

* Add header

* Less logging

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>
Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro.local>

* Auto detect latest block for optimal use of plain state and state cache

* Fix lint

* Fix test

Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro.local>

* storage override revert support

* Fix

Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro.local>

* Bump MaxPendingPayloads

* UnknownPayload error

* Improve ExchangeTransitionConfigurationV1 comment

* Extract MakeEmptyHeader

* Move MakeEmptyHeader to chain_makers

* Start with empty block as pending payload

* Only build payloads with the right parent hash

* Double check parent hash in SpawnMiningCreateBlockStage

* Simpler error formatting

* ReadHeadBlockHash instead of ReadHeadHeaderHash

* Avoid rebuilding already built blocks

* getPayload should stop the build process

* Tweaking stageLoopIsBusy

* Don't update pending payload after engine_getPayload

Simplify node URL list logic.
Handle errors.

* Adding contract code for event logs subscription

* Saving changes

* gofmt'd files

* Setting up devnet test tool for log subscription testing

* Fixed lint errors

Extract private key setup from the global config setup to make it reusable.
Return errors instead of panicing.

* NodeKey() method is removed - it is unused.

* updated tests

* using rpc.Timestamp

* added Timestamp type

* Optimise eth_getStorageAt for current state

* Fix

Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro.local>

Add explicit Context to ListenV4 and ListenV5.
This makes it possible to stop listening by an external signal.

Silence non-important comments in the "make erigon" output.

* use "log" for struct fields
* use "logger" for function parameters and local vars

This is a compromise between:
1) using logger := log.New() to avoid aliasing (log := log.New())
2) and keeping it short when logging e.g.: srv.log.Info(...)

* rename from Datadir to DataDir (functions and public vars)
* rename dataDir to datadir (local variables)

* done

* removed sleep

* f

* errors.Is(err, io.EOF) instead of err == io.EOF

Co-authored-by: yperbasis <andrey.ashikhmin@gmail.com>

Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro.local>

* mainnet

* save

* save

* save

* save

* save

* erigon

* save

* Simplify TerminalBlockHash & TerminalBlockNumber

* Simplify FeedHeaderPoS

* More accurate comment

* Relax TerminalBlockHash check

* Extract the sleep hack into stageLoopIsBusy

* Several short naps instead of a single longish sleep

* Fix coinbase in stage_mining_exec

* More orthodox loop

* typo in comment

* Fix for BSC incorrect execution

* collect skip analysis

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

* more rpc emed flags

* more rpc emed flags

* more rpc emed flags