…essarily scary.

* The "ERROR" was printed far too often during normal operation for what was not an error.

Coming from btc@00678bdb0aeb296456501f818faaa012a75ce18e

Github-Pull: PIVX-Project#2054
Rebased-From: 097322c

They were too noisy and not necessary for normal operation.

Coming from btc@0d9af79e5084dc2fb6a73abd9dd113dda4e993b4

Github-Pull: PIVX-Project#2054
Rebased-From: 2027d66

Before: ERROR: Error reading proxy response

Coming from btc@94fd1d8d53adceb80e5a41cc6438c7704aeac0f7

Github-Pull: PIVX-Project#2054
Rebased-From: fdec2e3

Coming from btc@bf9266e017b286c36e08fd09b91d9e39f14b2cf3

Github-Pull: PIVX-Project#2054
Rebased-From: a1b0017

Coming from btc@10ae7a7b2316f8052ec58ef237ce6dd987300900

Github-Pull: PIVX-Project#2054
Rebased-From: f62d152

Prior to this commit the value stored to `s` at initialization
was never read (in the case of STRERROR_R_CHAR_P).

Coming from btc@58446094519151e2e203944267e592eec2470643

Github-Pull: PIVX-Project#2054
Rebased-From: d46b369

9390f8e [Refactor] Pass caught logic_error by reference in CreateSig (random-zebra)
7f37d7e Only use one set of parentheses for optional arguments (Fuzzbawls)
19f5eae [RPC] Use "shield" nomenclature instead of "shielded" (Fuzzbawls)
0cb01c9 GUI: settings information, fix missing initial masternodes count value. (furszy)
20bd97a GUI: ccontrol: remove column checkbox extra whitespace in tree mode (random-zebra)
1555406 warnings: Compiler warning on memset usage for non-trivial type (Lenny Maiorani)
359f0c6 Drop defunct IS_TRIVIALLY_CONSTRUCTIBLE handling from prevector.h (Ben Woosley)
9675199 Reduce redundant code of prevector and speed it up (random-zebra)
e6ffe2a Add new prevector benchmarks. (random-zebra)
04756ee Fixup various formatting inconsistencies with RPC help output (Fuzzbawls)
41fc192 Don't bother registering the `multisend` command (Fuzzbawls)
bbbc7c9 Fix typo in `getsaplingnotescount` help text (Fuzzbawls)
87c4d21 [Build] Unify header file extensions (Fuzzbawls)
411edee [BUG] Miner not paying valid finalized budget if <20 active masternodes (random-zebra)
dabe995 Tests: minor fixes for mining_pos_reorg_py (random-zebra)
03ec6bb Wallet: return unconfirmed balance for all spendable coins by default (random-zebra)
e9a9d54 Consensus: Allow setting old spork key before its expiration (random-zebra)
c5abbda Consensus: update spork keys for v5 (random-zebra)
60f1535 GUI: Dashboard, fix type filtering disappearance. (furszy)
1f28551 Params: clear testnet checkpoints (random-zebra)
5b809b2 Params: Fix PoS block value for testnet to 5 (random-zebra)
4c847eb Params: Update testnet params - remove unused ones (random-zebra)
f2ea00d Params: change testnet datadir to testnet5 (random-zebra)
2444e54 BUG: Miner don't check for PoS activation at negative height (random-zebra)
f3b01ba Consensus: Budget: Fix instant killing of proposals (random-zebra)
0d0fe24 [BUG][GUI] Receive widget: check typeRole before refreshing view (random-zebra)
40e3203 Refactor: initialize dummy Spend/Output descriptions only once (random-zebra)
6ea78ad Sapling: Skip proofs and signatures during fee calculation loop (random-zebra)
0aa9439 Sapling: add option to skip ProveAndSing in TransactionBuilder::Build (random-zebra)
ff2dec2 Sapling: Decouple ProveAndSign from Build (random-zebra)
5b7e86d [Wallet] Do not perform ECDSA signing in the fee calculation inner loop (random-zebra)
7c87241 [Consensus] Bump TxVersion::SAPLING to 3 (random-zebra)
05fe877 Cleanup: remove unneeded check (time-based) for version 4 header (random-zebra)
a29f1e3 Miner: set proper block version based on upgrade enforcements (random-zebra)
8e0a9d9 Consensus: reject blocks with outdated version (<8) after v5 enforcement (random-zebra)
25e2816 BUG: Fix TestBlockValidity for PoW blocks (random-zebra)
1466f0b [GUI] Connect alert signal (furszy)
6850224 Move GetWarnings() into its own file. (furszy)
edf51b3 util GetWarnings, adding "gui" parameter type. (furszy)
60cc6f2 Eliminate data races for strMiscWarning and fLargeWork*Found. (furszy)
3fc1597 Make QT runawayException call GetWarnings instead of directly access strMiscWarning. (furszy)
0ece82d Separate CTranslationInterface from CClientUIInterface (furszy)
a46f00d [Cleanup] Remove unused global fields from util.h/cpp (furszy)
ee5306f Tests: Update sapling_malleable-sigs test, now failing (random-zebra)
8780161 Tests: update sighash json test data for saplingVersion txes (random-zebra)
0a82c10 Script: Properly sign/verify shielded tx with sigversion sapling (random-zebra)
6b5d96d Tests: Add trolling exploit demo (random-zebra)
460a875 Tests: fix order of sapData serialization (random-zebra)
43f7ca7 BUG: Guard access to tx.sapData in connectBlock (random-zebra)
c12ff2b BUG: SSPKM, guard GetDebit/GetCredit for non-shield v2 txes (random-zebra)
5797e2b [GUI][Trivial] Adjust CoinControl column widths for readability (Ambassador)
8c500df Tests: Add sapling_fillblock functional test (random-zebra)
ce7f265 Consensus: check total size of all shielded txes inside a block (random-zebra)
7b8425a Miner: do not include more than 750 kB of shielded txes inside a block (random-zebra)
c314d7b Trivial: Add Zcash copyright (random-zebra)
99fa644 Refactor: Decouple ShieldedSendManyTo from sendtoaddress/sendmany (random-zebra)
2b7b466 [Test] Add case for (shielded) sendtoaddress (random-zebra)
25b2513 [RPC] Redirect sendtoaddress to shieldedsendmany when shielded recipient (random-zebra)
8c2c328 Refactor: always check mnp blockhash in CMasternodePing::CheckAndUpdate (random-zebra)
aca3764 MN: pass sigTime to CMasternodePing constructor (random-zebra)
1ca9476 MN: pass lastPing to CMasternodeBroadcast constructor (random-zebra)
974b965 [Validation] Remove unused DisconnectBlock function definition. (furszy)
5a33bb1 [Validation] Remove unused DisconnectBlocks function. (furszy)
76ae626 [Validation] Remove unused ReprocessBlocks function. (furszy)
626170e [Masternde] Refactor activeMasternode.GetKeys callers to not expect a bool. (furszy)
545ca77 [Masternode] Clean now unused global strMasterNodePrivKey. (furszy)
8a88cd9 [Masternode] Stop parsing the MN private key string on every finalized budget vote. (furszy)
83080ea [Masternode] Stop parsing the masternode private key string on every ping. (furszy)
77a3959 [Masternode] Cache decoded Masternode private key (furszy)
d4b8a32 [net] Avoid initialization to a value that is never read (furszy)
bbc3a7e Revert "Use async name resolving to improve net thread responsiveness" (furszy)
e9469b1 Use Socks5ErrorString() to decode error responses from socks proxy. (furszy)
2e23740 Make Socks5() InterruptibleRecv() timeout/failures informative. (furszy)
7eefaba SOCKS5 connecting and connected messages with -debug=net. (furszy)
6baf377 Make failures to connect via Socks5() more informative and less unnecessarily scary. (furszy)
aff68db [GUI] Transaction detail, scroll memo fix, starting from the top. (furszy)
38895a9 Make tests pass after 2020 (Bernhard M. Wiedemann)
ac8d818 [Wallet] BugFix: automatic upgrade for unlocked wallet isn't upgrading the wallet feature version. (furszy)
b1133c4 [Tests] Check spent nullifier in sapling_wallet_listreceived (random-zebra)
9576897 [RPC] Add nullifiers to listshieldedunspent output (random-zebra)
f99a176 [BUG][RPC] Fix check in wallet upgrade RPC (random-zebra)
fb58f5f [Miner] Update block header's current version to v8 (Fuzzbawls)
99c2d5e [TierTwo] Remove unneeded extra logging. (furszy)
3066165 [Sapling] Transparent inputs selection, fixing inverted order. Sort decrementally instead of incrementally. (furszy)
0eaf735 [Test] Adding sapling transaction validation unit test coverage. (furszy)
f695d12 CMakeList, pivxd and test_pivx fix for missing MacOS framework. (furszy)

Pull request description:

  backports the following PRs from master to the 5.0 branch:

  #2041
  #2042
  #2046
  #2045
  #2052
  #2047
  #2049
  #2048
  #2059
  #2055
  #2054
  #2056
  #2058
  #2060
  #2050
  #2061
  #2062
  #2033
  #2064
  #2063
  #2067
  #2051
  #2065
  #2066
  #2068
  #2069
  #2073
  #2071
  #2080
  #2081
  #2084
  #2087
  #2088
  #2083
  #2070
  #2075
  #2086
  #2091

ACKs for top commit:
  random-zebra:
    utACK 9390f8e
  furszy:
    utACK 9390f8e

Tree-SHA512: aca2dc8fd3b8d234a27ba7b128168cc3e48b0b775b5699f8fe53e84ac548eb99121b3f0304939896c6e876ffd252f2023958ccb38a344425093948f206238892