all: unify format of our Copyright source code commentsth/copyright-comment-cleanup

```bash

readarray -d '' FILES < <(
  git ls-files -z \
    ':(exclude)po' \
    ':(exclude)shared/c-rbtree' \
    ':(exclude)shared/c-list' \
    ':(exclude)shared/c-siphash' \
    ':(exclude)shared/c-stdaux' \
    ':(exclude)shared/n-acd' \
    ':(exclude)shared/n-dhcp4' \
    ':(exclude)src/systemd/src' \
    ':(exclude)shared/systemd/src' \
    ':(exclude)m4' \
    ':(exclude)COPYING*'
  )

sed \
  -e 's/^\(--\|#\| \*\) *\(([cC]) *\)\?Copyright \+\(\(([cC])\) \+\)\?\(\(20\|19\)[0-9][0-9]\) *[-–] *\(\(20\|19\)[0-9][0-9]\) \+\([^ ].*\)$/\1 C1pyright#\5 - \7#\9/' \
  -e 's/^\(--\|#\| \*\) *\(([cC]) *\)\?Copyright \+\(\(([cC])\) \+\)\?\(\(20\|19\)[0-9][0-9]\) *[,] *\(\(20\|19\)[0-9][0-9]\) \+\([^ ].*\)$/\1 C2pyright#\5, \7#\9/' \
  -e 's/^\(--\|#\| \*\) *\(([cC]) *\)\?Copyright \+\(\(([cC])\) \+\)\?\(\(20\|19\)[0-9][0-9]\) \+\([^ ].*\)$/\1 C3pyright#\5#\7/' \
  -e 's/^Copyright \(\(20\|19\)[0-9][0-9]\) \+\([^ ].*\)$/C4pyright#\1#\3/' \
  -i \
  "${FILES[@]}"

echo ">>> untouched Copyright lines"
git grep Copyright "${FILES[@]}"

echo ">>> Copyright lines with unusual extra"
git grep '\<C[0-9]pyright#' "${FILES[@]}" | grep -i reserved

sed \
  -e 's/\<C[0-9]pyright#\([^#]*\)#\(.*\)$/Copyright (C) \1 \2/' \
  -i \
  "${FILES[@]}"

```

13 files changed, 13 insertions, 13 deletions

diff --git a/examples/python/gi/add_connection.py b/examples/python/gi/add_connection.py
index b650b9f388..9cf9e348f1 100755
--- a/examples/python/gi/add_connection.py
+++ b/examples/python/gi/add_connection.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Copyright 2014 Red Hat, Inc.
+# Copyright (C) 2014 Red Hat, Inc.
 #
 
 #
diff --git a/examples/python/gi/checkpoint.py b/examples/python/gi/checkpoint.py
index c5b20d683c..b3b4e0f8a5 100755
--- a/examples/python/gi/checkpoint.py
+++ b/examples/python/gi/checkpoint.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Copyright 2017 Red Hat, Inc.
+# Copyright (C) 2017 Red Hat, Inc.
 #
 
 import sys
diff --git a/examples/python/gi/deactivate-all.py b/examples/python/gi/deactivate-all.py
index a10c0ebb4b..3af350e4c3 100755
--- a/examples/python/gi/deactivate-all.py
+++ b/examples/python/gi/deactivate-all.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Copyright 2015 Red Hat, Inc.
+# Copyright (C) 2015 Red Hat, Inc.
 #
 
 #
diff --git a/examples/python/gi/firewall-zone.py b/examples/python/gi/firewall-zone.py
index 75aa2e2616..6cbd8c2549 100755
--- a/examples/python/gi/firewall-zone.py
+++ b/examples/python/gi/firewall-zone.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Copyright 2013 - 2014 Red Hat, Inc.
+# Copyright (C) 2013 - 2014 Red Hat, Inc.
 #
 
 import sys
diff --git a/examples/python/gi/get_ips.py b/examples/python/gi/get_ips.py
index 12378117a7..13b0a8b6db 100755
--- a/examples/python/gi/get_ips.py
+++ b/examples/python/gi/get_ips.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Copyright 2014 Red Hat, Inc.
+# Copyright (C) 2014 Red Hat, Inc.
 #
 
 import sys, socket
diff --git a/examples/python/gi/list-connections.py b/examples/python/gi/list-connections.py
index eee687c9e8..7278fafd9b 100755
--- a/examples/python/gi/list-connections.py
+++ b/examples/python/gi/list-connections.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Copyright 2012 - 2014 Red Hat, Inc.
+# Copyright (C) 2012 - 2014 Red Hat, Inc.
 #
 
 import gi
diff --git a/examples/python/gi/nm-add-connection2.py b/examples/python/gi/nm-add-connection2.py
index a62443730c..01c1ae7bd9 100755
--- a/examples/python/gi/nm-add-connection2.py
+++ b/examples/python/gi/nm-add-connection2.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Copyright 2019 Red Hat, Inc.
+# Copyright (C) 2019 Red Hat, Inc.
 #
 
 import sys
diff --git a/examples/python/gi/nm-connection-update-stable-id.py b/examples/python/gi/nm-connection-update-stable-id.py
index 163b3018e0..3629d07230 100755
--- a/examples/python/gi/nm-connection-update-stable-id.py
+++ b/examples/python/gi/nm-connection-update-stable-id.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Copyright 2017 Red Hat, Inc.
+# Copyright (C) 2017 Red Hat, Inc.
 #
 
 #
diff --git a/examples/python/gi/nm-update2.py b/examples/python/gi/nm-update2.py
index 124464de22..5a65879371 100755
--- a/examples/python/gi/nm-update2.py
+++ b/examples/python/gi/nm-update2.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Copyright 2019 Red Hat, Inc.
+# Copyright (C) 2019 Red Hat, Inc.
 #
 
 import sys
diff --git a/examples/python/gi/nm-wg-set b/examples/python/gi/nm-wg-set
index a151c6094b..ca31ac7207 100755
--- a/examples/python/gi/nm-wg-set
+++ b/examples/python/gi/nm-wg-set
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Copyright 2018 - 2019 Red Hat, Inc.
+# Copyright (C) 2018 - 2019 Red Hat, Inc.
 #
 
 # nm-wg-set: modify an existing WireGuard connection profile.
diff --git a/examples/python/gi/setting-user-data.py b/examples/python/gi/setting-user-data.py
index dac81b78a8..fd86445b84 100755
--- a/examples/python/gi/setting-user-data.py
+++ b/examples/python/gi/setting-user-data.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Copyright 2017 Red Hat, Inc.
+# Copyright (C) 2017 Red Hat, Inc.
 #
 
 #
diff --git a/examples/python/gi/update-ip4-method.py b/examples/python/gi/update-ip4-method.py
index fbfd2a893a..9bba619918 100755
--- a/examples/python/gi/update-ip4-method.py
+++ b/examples/python/gi/update-ip4-method.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Copyright 2014 Red Hat, Inc.
+# Copyright (C) 2014 Red Hat, Inc.
 #
 
 #
diff --git a/examples/python/gi/vpn-import.py b/examples/python/gi/vpn-import.py
index b86518bab6..78ae7cb182 100755
--- a/examples/python/gi/vpn-import.py
+++ b/examples/python/gi/vpn-import.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0+
 #
-# Copyright 2014 Red Hat, Inc.
+# Copyright (C) 2014 Red Hat, Inc.
 #
 
 #