copyrights: update all files with license headers for 2021

- [x] add `concretize.lp`, `spack.yaml`, etc. to licensed files
- [x] update all licensed files to say 2013-2021 using
      `spack license update-copyright-year`
- [x] appease mypy with some additions to package.py that needed
      for oneapi.py

2 files changed, 2 insertions, 2 deletions

diff --git a/bin/spack b/bin/spack
index 1f9e257b8d..e979e2af64 100755
--- a/bin/spack
+++ b/bin/spack
@@ -1,7 +1,7 @@
 #!/bin/sh
 # -*- python -*-
 #
-# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
+# Copyright 2013-2021 Lawrence Livermore National Security, LLC and other
 # Spack Project Developers. See the top-level COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
diff --git a/bin/spack-python b/bin/spack-python
index 22141b46d6..923f7380ba 100755
--- a/bin/spack-python
+++ b/bin/spack-python
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
+# Copyright 2013-2021 Lawrence Livermore National Security, LLC and other
 # Spack Project Developers. See the top-level COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)