Merge bitcoin/bitcoin#23912: Insert and bump copyright headers

1362d6173f scripted-diff: Insert missed copyright headers (Hennadii Stepanov)
f47dda2c58 scripted-diff: Bump copyright headers (Hennadii Stepanov)
c29105efdc script: Fix copyright_header.py (Hennadii Stepanov)

Pull request description:

  This PR is an alternative to #23903.

  It bumps the existing copyright headers as we did every year, and adds the missed copyright headers.

  A small fix has been applied to the `copyright_header.py` in order to prevent such weird bumping as `2021` --> `2021-2017`.

ACKs for top commit:
  MarcoFalke:
    ACK 1362d6173f

Tree-SHA512: 204d970fe8c51546b26b8f03fe4297db8a9bef5101df851540b7b9eddbd3a09677ee81fdd882c60937d732407f42c9883165bd978272200cff8f90190f075905

test/functional/feature_bind_extra.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2014-2020 The Bitcoin Core developers
+# Copyright (c) 2014-2021 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """

test/functional/p2p_add_connections.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2020 The Bitcoin Core developers
+# Copyright (c) 2020-2021 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test add_outbound_p2p_connection test framework functionality"""

test/functional/p2p_timeouts.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2016-2020 The Bitcoin Core developers
+# Copyright (c) 2016-2021 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test various net timeouts.

test/functional/rpc_generate.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2020 The Bitcoin Core developers
+# Copyright (c) 2020-2021 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test generate RPC."""

test/functional/rpc_getblockfrompeer.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2020 The Bitcoin Core developers
+# Copyright (c) 2020-2021 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test the getblockfrompeer RPC."""

test/lint/git-subtree-check.sh

@@ -1,5 +1,5 @@
 #!/bin/sh
-# Copyright (c) 2015-2020 The Bitcoin Core developers
+# Copyright (c) 2015-2021 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 

test/lint/lint-files.sh

@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# Copyright (c) 2021 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 export LC_ALL=C
 

test/lint/lint-git-commit-check.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# Copyright (c) 2020 The Bitcoin Core developers
+# Copyright (c) 2020-2021 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #

test/lint/lint-include-guards.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Copyright (c) 2018-2020 The Bitcoin Core developers
+# Copyright (c) 2018-2021 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #

test/lint/lint-shell-locale.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Copyright (c) 2018 The Bitcoin Core developers
+# Copyright (c) 2018-2020 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #