* eth/downloader: fix data race around the ancientlimit

* eth/downloader: initialize the ancientlimit as 0
# Conflicts:
#	eth/downloader/downloader.go

* core/vm: dedup config check

* review feedback: reuse buffer
# Conflicts:
#	core/vm/logger.go

For some reason, using the shared hash causes a cryptographic incompatibility
when using Go 1.15. I noticed this during the development of Discovery v5.1
when I added test vector verification.

The go library commit that broke this is golang/go@97240d5, but the
way we used HKDF is slightly dodgy anyway and it's not a regression.

* signer/core: don't mismatch reject and zero accounts, fixes #21674

* signer/core: docs

This makes it accept the "upgrade,keep-alive" header value, which
apparently is a thing.

This fixes issues with the protocol handshake and status exchange
and adds support for responding to GetBlockHeaders requests.
# Conflicts:
#	cmd/devp2p/internal/ethtest/suite.go
#	cmd/devp2p/internal/ethtest/types.go

* core/types: tests for bloom

* core/types: refactored bloom filter for receipts, added tests

core/types: replaced old bloom implementation

core/types: change interface of bloom add+test

* core/types: refactor bloom

* core/types: minor tweak on LogsBloom

Co-authored-by: Marius van der Wijden <m.vanderwijden@live.de>
# Conflicts:
#	core/types/bloom9.go
#	core/types/bloom9_test.go

* core/bloombits: add benchmark

* core/bloombits: optimize inserts

* params: update pegasys besu bootnode

* params: update goerli initiative bootnodes

# Conflicts:
#	cmd/faucet/faucet.go
#	cmd/utils/flags.go

* core/state/snapshot: exit Geth if generator hits missing trie nodes

* core/state/snapshot: error instead of hard die on generator fault

* core/state/snapshot: don't enable logging on the tests
# Conflicts:
#	core/state/snapshot/generate.go

# Conflicts:
#	trie/trie_test.go

* trie: update tests to check commit integrity

* trie: polish committer

* trie: fix typo

* trie: remove hasvalue notion

According to the benchmarks, type assertion between the pointer and
interface is extremely fast.

BenchmarkIntmethod-12           1000000000               1.91 ns/op
BenchmarkInterface-12           1000000000               2.13 ns/op
BenchmarkTypeSwitch-12          1000000000               1.81 ns/op
BenchmarkTypeAssertion-12       2000000000               1.78 ns/op

So the overhead for asserting whether the shortnode has "valuenode"
child is super tiny. No necessary to have another field.

* trie: linter nitpicks

Co-authored-by: Martin Holst Swende <martin@swende.se>
# Conflicts:
#	trie/committer.go
#	trie/hasher.go
#	trie/trie.go
#	trie/trie_test.go

* accounts, signer: implement gnosis safe support

* common/math: add type for marshalling big to dec

* accounts, signer: properly sign gnosis requests

* signer, clef: implement account_signGnosisTx

* signer: fix auditlog print, change rpc-name (signGnosisTx to signGnosisSafeTx)

* signer: pass validation-messages/warnings to the UI for gnonsis-safe txs

* signer/core: minor change to validationmessages of typed data

core/types: use stacktrie for derivesha

trie: add stacktrie file

trie: fix linter

core/types: use stacktrie for derivesha

rebased: adapt stacktrie to the newer version of DeriveSha

Co-authored-by: Martin Holst Swende <martin@swende.se>

More linter fixes

review feedback: no key offset for nodes converted to hashes

trie: use EncodeRLP for full nodes

core/types: insert txs in order in derivesha

trie: tests for derivesha with stacktrie

trie: make stacktrie use pooled hashers

trie: make stacktrie reuse tmp slice space

trie: minor polishes on stacktrie

trie/stacktrie: less rlp dancing

core/types: explain the contorsions in DeriveSha

ci: fix goimport errors

trie: clear mem on subtrie hashing

squashme: linter fix

stracktrie: use pooling, less allocs (#3)

trie: in-place hex prefix, reduce allocs and add rawNode.EncodeRLP

Reintroduce the `[]node` method, add the missing `EncodeRLP` implementation for `rawNode` and calculate the hex prefix in place.

Co-authored-by: Martin Holst Swende <martin@swende.se>

Co-authored-by: Martin Holst Swende <martin@swende.se>
# Conflicts:
#	core/block_validator.go
#	core/types/derive_sha.go
#	eth/downloader/queue.go
#	eth/handler.go
#	turbo/trie/database.go
#	turbo/trie/encoding.go
#	turbo/trie/encoding_test.go
#	turbo/trie/stacktrie.go
#	turbo/trie/stacktrie_test.go

* ci: tooltips for javadoc for mobile app

* f space
# Conflicts:
#	Makefile
#	build/ci.go

# Conflicts:
#	light/odr.go

* Fix potential memory leak in price heap

* core: nil free pointer slice (alternative version)

Co-authored-by: Martin Holst Swende <martin@swende.se>

# Conflicts:
#	core/vm/gas_table.go

* mobile: added constructor for big int

* mobile: tiny nitpick
# Conflicts:
#	mobile/big.go

* accounts/abi: refactored abi.Unpack

* accounts/abi/bind: fixed error

* accounts/abi/bind: modified template

* accounts/abi/bind: added ToStruct for conversion

* accounts/abi: reenabled tests

* accounts/abi: fixed tests

* accounts/abi: fixed tests for packing/unpacking

* accounts/abi: fixed tests

* accounts/abi: added more logic to ToStruct

* accounts/abi/bind: fixed template

* accounts/abi/bind: fixed ToStruct conversion

* accounts/abi/: removed unused code

* accounts/abi: updated template

* accounts/abi: refactored unused code

* contracts/checkpointoracle: updated contracts to sol ^0.6.0

* accounts/abi: refactored reflection logic

* accounts/abi: less code duplication in Unpack*

* accounts/abi: fixed rebasing bug

* fix a few typos in comments

* rebase on master

Co-authored-by: Guillaume Ballet <gballet@gmail.com>
# Conflicts:
#	accounts/abi/bind/base_test.go
#	accounts/abi/bind/bind_test.go
#	accounts/abi/pack_test.go
#	go.mod
#	mobile/bind.go

* Splitting sentry and downloader - the beginning

* A bit more

* More on sentry

* More gRPC

* Sentry and downloader separated

* Update binding for stable version of grpc

* Better bufferSize flag

* Fix lint

* Send pelanties

* Fix lint

* Remove hard-coded tips on connect

* Tidy the logs a bit

* Deal with hardTips on Recovery

* Print hard tips

* Hide empty anchors

* Request headers after receiving a message

* Better waking up

* Print hard-coded block numbers

* Print outgoing requests

* Debug logging

* In the middle protection

* Sentry not to lose peers when core disconnects

* Initial

* Read freelist pages

* Fix

* Fix lint

* Fix lint

* Fix lint

* squash

* add --database flag to integration

* clean

* split to 2 buckets

* split to 2 buckets

* split to 2 buckets

* split to 2 buckets

* split to 2 buckets

* save progress

* save progress

* improve test

* improve test

* save progress

* change app logic

* change app logic

* return err from rawdb package

* don't clean automatically

* don't clean automatically

* clean

* clean

* clean

* don't rely on `make clean`

* improve cbor code

* clean

* clean

* clean

* fix tests

* rebase master

* stop on error: headers stage

* make TxDb walk and multiwalk safe

* Fix panics

Co-authored-by: Alexey Akhunov <akhounov@gmail.com>

* Fix infinite rpc.gascap on eth_estimateGas

* use `gasCap.Sign() > 0` instead of `gasCap.Uint64() != 0`

* Automate documentation

* Updating

* Updating

* Fixing lint

* Updating readthedocs documentation

* Updating testing

* Updating testing

* protect_from_wrong_class_use

* more cases

* ReadBlockByNumber and ReadChainConfig return error

* Let's make rawdb package to return error. But by small steps.
High-level methods need to move first:

ReadBlockByNumber
ReadChainConfig
ReadBlockByHash
ReadHeaderByHash
WriteChainConfig
WriteDatabaseVersion
WriteBlock
DeleteTd
WriteTd
ReadTd

* allow_read_transactions

* fix lint

* fix lint

* more cases