contrib: add copyright for my scripts

contrib/ChangeLog:

	* analyze_brprob.py: Add copyright header.
	* analyze_brprob_spec.py: Likewise.
	* check-params-in-docs.py: Likewise.
	* check_GNU_style.py: Likewise.
	* check_GNU_style_lib.py: Likewise.
	* filter-clang-warnings.py: Likewise.
	* gcc-changelog/git_check_commit.py: Likewise.
	* gcc-changelog/git_commit.py: Likewise.
	* gcc-changelog/git_email.py: Likewise.
	* gcc-changelog/git_repository.py: Likewise.
	* gcc-changelog/git_update_version.py: Likewise.
	* gcc-changelog/test_email.py: Likewise.
	* mark_spam.py: Likewise.

contrib/analyze_brprob.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+
+# Copyright (C) 2016 Free Software Foundation, Inc.
 #
 # Script to analyze results of our branch prediction heuristics
 #

contrib/analyze_brprob_spec.py

@@ -1,5 +1,7 @@
 #!/usr/bin/env python3
 
+# Copyright (C) 2016 Free Software Foundation, Inc.
+#
 # This file is part of GCC.
 #
 # GCC is free software; you can redistribute it and/or modify it under

contrib/check-params-in-docs.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+
+# Copyright (C) 2018 Free Software Foundation, Inc.
 #
 # Find missing and extra parameters in documentation compared to
 # output of: gcc --help=params.

contrib/check_GNU_style.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+
+# Copyright (C) 2017 Free Software Foundation, Inc.
 #
 # Checks some of the GNU style formatting rules in a set of patches.
 # The script is a rewritten of the same bash script and should eventually

contrib/check_GNU_style_lib.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+
+# Copyright (C) 2017 Free Software Foundation, Inc.
 #
 # Checks some of the GNU style formatting rules in a set of patches.
 # The script is a rewritten of the same bash script and should eventually

contrib/filter-clang-warnings.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+
+# Copyright (C) 2018 Free Software Foundation, Inc.
 #
 # Script to analyze warnings produced by clang.
 #

contrib/gcc-changelog/git_check_commit.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+
+# Copyright (C) 2020 Free Software Foundation, Inc.
 #
 # This file is part of GCC.
 #

contrib/gcc-changelog/git_commit.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+
+# Copyright (C) 2020 Free Software Foundation, Inc.
 #
 # This file is part of GCC.
 #

contrib/gcc-changelog/git_email.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+
+# Copyright (C) 2020 Free Software Foundation, Inc.
 #
 # This file is part of GCC.
 #

contrib/gcc-changelog/git_repository.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+
+# Copyright (C) 2020 Free Software Foundation, Inc.
 #
 # This file is part of GCC.
 #

contrib/gcc-changelog/git_update_version.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+
+# Copyright (C) 2020 Free Software Foundation, Inc.
 #
 # This file is part of GCC.
 #

contrib/gcc-changelog/test_email.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+
+# Copyright (C) 2020 Free Software Foundation, Inc.
 #
 # This file is part of GCC.
 #

contrib/mark_spam.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+
+# Copyright (C) 2016 Free Software Foundation, Inc.
 #
 # Script to mark bunch of PRs as spam 
 #