Update Copyright Year ('2021' -> 'present')

```
for f in $(find . \( -path ./.git -o -path ./tests/fuzz/corpora -o -path ./tests/regression/data-cache -o -path ./tests/regression/cache \) -prune -o -type f);
do
  sed -i 's/\-2021/-present/' $f;
done

g co HEAD -- .github/workflows/dev-short-tests.yml # fix bad match
```

Makefile

@@ -1,5 +1,5 @@
 # ################################################################
-# Copyright (c) 2015-2021, Yann Collet, Meta Platforms, Inc. and affiliates.
+# Copyright (c) 2015-present, Yann Collet, Meta Platforms, Inc. and affiliates.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the

contrib/freestanding_lib/freestanding.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 # ################################################################
-# Copyright (c) 2021-2021, Meta Platforms, Inc. and affiliates.
+# Copyright (c) 2021-present, Meta Platforms, Inc. and affiliates.
 # All rights reserved.
 #
 # This source code is licensed under both the BSD-style license (found in the

contrib/linux-kernel/test/include/linux/compiler.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

contrib/linux-kernel/test/include/linux/errno.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

contrib/linux-kernel/test/include/linux/kernel.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

contrib/linux-kernel/test/include/linux/limits.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

contrib/linux-kernel/test/include/linux/math64.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

contrib/linux-kernel/test/include/linux/module.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

contrib/linux-kernel/test/include/linux/printk.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

contrib/linux-kernel/test/include/linux/stddef.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

contrib/linux-kernel/test/include/linux/swab.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

contrib/linux-kernel/test/include/linux/types.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

contrib/recovery/recover_directory.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

doc/zstd_compression_format.md

@@ -3,7 +3,7 @@ Zstandard Compression Format
 
 ### Notices
 
-Copyright (c) 2016-2021 Yann Collet, Meta Platforms, Inc. and affiliates.
+Copyright (c) 2016-present Yann Collet, Meta Platforms, Inc. and affiliates.
 
 Permission is granted to copy and distribute this document
 for any purpose and without charge,

zlibWrapper/gzcompatibility.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Przemyslaw Skibinski, Yann Collet, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Przemyslaw Skibinski, Yann Collet, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

zlibWrapper/zstd_zlibwrapper.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Przemyslaw Skibinski, Yann Collet, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Przemyslaw Skibinski, Yann Collet, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the

zlibWrapper/zstd_zlibwrapper.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, Przemyslaw Skibinski, Yann Collet, Meta Platforms, Inc. and affiliates.
+ * Copyright (c) 2016-present, Przemyslaw Skibinski, Yann Collet, Meta Platforms, Inc. and affiliates.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the