build: deprecate Ubuntu Cosmic, start supporting Eoan

params: update CHT to 12th August, 2019

* core, trie: decode the value for storage dump

* core/state: address comment

* Ref #19906 - replace passPHRASE with passWORD in any user interactions

this skips doccomments and variablenames to minimize impact. It does
however include a rename of the `ethkey` `changepassphrase` parameter

* console: fix JavaScript error capitalization

* graphql, internal/ethapi: extend eth_call

This PR offers the third option parameter for eth_call API.
Caller can specify a batch of contracts for overriding the
original account metadata(nonce, balance, code, state).
It has a few advantages:

* It's friendly for debugging
* It's can make on-chain contract lighter for getting rid of
  state access functions

* core, internal: address comments

* core/vm: implement EIP 1344 (ChainID opcode)

* core/vm: formatting

* accounts/mananger, internal/ethapi/api: Add new function AllAccounts on account manager to remove the duplication code on getting all wallets accounts

* Rename to Accounts

* Rename to AllAccounts

* core/vm, tests: implement EIP 1884, add support for feature-tests

* core/vm: 1884-changes to extcodehash, move selfbalance opcode

* tests: fix statetests

* core/vm: move constants, address review concerns

* core/vm: word formatting

Co-Authored-By: Péter Szilágyi <peterke@gmail.com>

* Fix commit extraction

* Comments for commit extraction

Requested in https://github.com/ethereum/go-ethereum/pull/18315

* core/vm:modify comment errors

* modify its back to it's

* params: add IsIstanbul to config + rules

IstanbulBlock, used to determine if the config IsIstanbul, is currently
left nil until an actual block is chosen.

* params, core/vm: implement EIP-1108

Old gas costs for elliptic curve operations are given the PreIstanbul
prefix, while current gas costs retain the unprefixed names. The actual
precompile implementations are the same, so they are factored out into
common functions that are called by the pre-Istanbul and current
precompile structs. Finally, an Istanbul precompile list is added that
references the new precompile structs, which in turn reference the new
gas costs.

* params: fix fork ordering, add missing chain compatibility check

* params, core/vm: deprecating gastable, part 1

* core/vm, params: deprecate gastable, use both constant and dynamic gas

* core/vm, params: remove gastable, remove copypaste

* core/vm: make use of the chainrules

* interpreter: make tracing count constant+dynamic gas

* core/vm: review concerns (param/method name changes)

* core/vm: make use of chainrules more

The abi package already supports function overload by adding a suffix to the overloaded function name, but it uses the function name with suffix to calculate signature(both for the event and method).

This PR fixes it by adding a new field named RawName, which can be used to calcuate all signatures but use Name to distinguish different overloaded function.

* ethdb/memorydb: allow noop compact on memdb

* ethdb/memorydb: fix comment type

accounts/abi/bind: support closing a simulated backend

This change ensures 'blockHash', 'blockNumber' and 'transactionIndex'
are set to null for pending transactions. This behavior is required by
the Ethereum JSON-RPC spec.

* Fixes #19861 - coloured output

* cmd/clef: minor formatting nit

* cmd/clef: bleah, stupid github editor

* eth, interal, les: add getHeaderBy* APIs

* internal: address the comment

* eth, internal, les: getHeader nits, missing TD, console callable

* bump azure-storage-blob-go dependency to 0.3.0 release

* update azure-storage-blob-go module import path

* fix multiple return values on azblob.NewSharedKeyCredential

* vendor: bump Azure libs to latest from upstream

cmd/geth: skip 4GB memory bump for devnet

* Add 5 minute grace period to faucet timeout

* cmd/faucet: make grace period dynamic based on original wait time

Fixed assigning values to variables we don't end up using.

* rpc: implement websockets with github.com/gorilla/websocket

This change makes package rpc use the github.com/gorilla/websocket
package for WebSockets instead of golang.org/x/net/websocket. The new
library is more robust and supports all WebSocket features including
continuation frames.

There are new tests for two issues with the previously-used library:

  - TestWebsocketClientPing checks handling of Ping frames.
  - TestWebsocketLargeCall checks whether the request size limit is
    applied correctly.

* rpc: raise HTTP/WebSocket request size limit to 5MB

* rpc: remove default origin for client connections

The client used to put the local hostname into the Origin header because
the server wanted an origin to accept the connection, but that's silly:
Origin is for browsers/websites. The nobody would whitelist a particular
hostname.

Now that the server doesn't need Origin anymore, don't bother setting
one for clients. Users who need an origin can use DialWebsocket to
create a client with arbitrary origin if needed.

* vendor: put golang.org/x/net/websocket back

* rpc: don't set Origin header for empty (default) origin

* rpc: add HTTP status code to handshake error

This makes it easier to debug failing connections.

* ethstats: use github.com/gorilla/websocket

* rpc: fix lint