relicense: replace LGPL headers with Apache-2.0/MIT SPDX headers

- remove the old LGPL license headers from all files in Spack
- add SPDX headers to all files
  - core and most packages are (Apache-2.0 OR MIT)
  - a very small number of remaining packages are LGPL-2.1-only

lib/spack/docs/build_systems/autotoolspackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _autotoolspackage:
 
 ----------------

lib/spack/docs/build_systems/cmakepackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _cmakepackage:
 
 ------------

lib/spack/docs/build_systems/cudapackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _cudapackage:
 
 -----------

lib/spack/docs/build_systems/custompackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _custompackage:
 
 --------------------

lib/spack/docs/build_systems/intelpackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _intelpackage:
 
 ------------

lib/spack/docs/build_systems/makefilepackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _makefilepackage:
 
 ---------------

lib/spack/docs/build_systems/mesonpackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _mesonpackage:
 
 ------------

lib/spack/docs/build_systems/octavepackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _octavepackage:
 
 -------------

lib/spack/docs/build_systems/perlpackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _perlpackage:
 
 -----------

lib/spack/docs/build_systems/pythonpackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _pythonpackage:
 
 -------------

lib/spack/docs/build_systems/qmakepackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _qmakepackage:
 
 ------------

lib/spack/docs/build_systems/rpackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _rpackage:
 
 --------

lib/spack/docs/build_systems/rubypackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _rubypackage:
 
 -----------

lib/spack/docs/build_systems/sconspackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _sconspackage:
 
 ------------

lib/spack/docs/build_systems/wafpackage.rst

@@ -1,3 +1,8 @@
+.. Copyright 2013-2018 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)
+
 .. _wafpackage:
 
 ----------