Use SPDX-License-Identifier consistently

This replaces all of the Apache blurbs at the start of each file with an
`# SPDX-License-Identifier: Apache-2.0` string. It also fixes existing
uses to be consistent in capitalization, and to be placed above any
copyright notices.

This removes nearly 3000 lines of boilerplate from the project (only
python files), which no developer cares to look at.

SPDX is in common use, particularly in the Linux kernel, and is the
recommended format for Meson's own `project(license: )` field

15 files changed, 17 insertions, 182 deletions

diff --git a/unittests/allplatformstests.py b/unittests/allplatformstests.py
index 86a6b61..c155198 100644
--- a/unittests/allplatformstests.py
+++ b/unittests/allplatformstests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 import subprocess
 import re
 import json
diff --git a/unittests/baseplatformtests.py b/unittests/baseplatformtests.py
index 514f3b7..ec3f189 100644
--- a/unittests/baseplatformtests.py
+++ b/unittests/baseplatformtests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 from pathlib import PurePath
 from unittest import mock, TestCase, SkipTest
 import json
diff --git a/unittests/darwintests.py b/unittests/darwintests.py
index 91ccb42..5528bbc 100644
--- a/unittests/darwintests.py
+++ b/unittests/darwintests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 import subprocess
 import re
 import os
diff --git a/unittests/datatests.py b/unittests/datatests.py
index 70fdcba..ae32a94 100644
--- a/unittests/datatests.py
+++ b/unittests/datatests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 import re
 import unittest
 from itertools import chain
diff --git a/unittests/failuretests.py b/unittests/failuretests.py
index 2b7c73e..baa5920 100644
--- a/unittests/failuretests.py
+++ b/unittests/failuretests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 import subprocess
 import tempfile
 import os
diff --git a/unittests/internaltests.py b/unittests/internaltests.py
index 3dc0fe7..945faa1 100644
--- a/unittests/internaltests.py
+++ b/unittests/internaltests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 from configparser import ConfigParser
 from pathlib import Path
 from unittest import mock
diff --git a/unittests/linuxcrosstests.py b/unittests/linuxcrosstests.py
index 28bf415..a35633c 100644
--- a/unittests/linuxcrosstests.py
+++ b/unittests/linuxcrosstests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 import os
 import shutil
 import unittest
diff --git a/unittests/linuxliketests.py b/unittests/linuxliketests.py
index a02c99e..2718229 100644
--- a/unittests/linuxliketests.py
+++ b/unittests/linuxliketests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2022 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 import stat
 import subprocess
 import re
diff --git a/unittests/machinefiletests.py b/unittests/machinefiletests.py
index d2309f8..c380261 100644
--- a/unittests/machinefiletests.py
+++ b/unittests/machinefiletests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 from __future__ import annotations
 
 import subprocess
diff --git a/unittests/platformagnostictests.py b/unittests/platformagnostictests.py
index 31dea0f..581ecac 100644
--- a/unittests/platformagnostictests.py
+++ b/unittests/platformagnostictests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 import json
 import os
 import pickle
diff --git a/unittests/pythontests.py b/unittests/pythontests.py
index afcfec3..6079bd5 100644
--- a/unittests/pythontests.py
+++ b/unittests/pythontests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 import glob, os, pathlib, shutil, subprocess, unittest
 
 from run_tests import (
diff --git a/unittests/rewritetests.py b/unittests/rewritetests.py
index 7932fec..af5e204 100644
--- a/unittests/rewritetests.py
+++ b/unittests/rewritetests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 import subprocess
 from itertools import zip_longest
 import json
diff --git a/unittests/subprojectscommandtests.py b/unittests/subprojectscommandtests.py
index d50828b..85950a0 100644
--- a/unittests/subprojectscommandtests.py
+++ b/unittests/subprojectscommandtests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 import subprocess
 import tempfile
 import textwrap
diff --git a/unittests/taptests.py b/unittests/taptests.py
index 6c2ccb0..26d96ea 100644
--- a/unittests/taptests.py
+++ b/unittests/taptests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 import unittest
 import io
 
diff --git a/unittests/windowstests.py b/unittests/windowstests.py
index be53d65..fc56eaa 100644
--- a/unittests/windowstests.py
+++ b/unittests/windowstests.py
@@ -1,17 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2016-2021 The Meson development team
 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-#     http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 import subprocess
 import re
 import os
@@ -184,7 +173,7 @@ class WindowsTests(BasePlatformTests):
             # to the right reason).
             return
         self.build()
-    
+
     @skipIf(is_cygwin(), 'Test only applicable to Windows')
     def test_genvslite(self):
         # The test framework itself might be forcing a specific, non-ninja backend across a set of tests, which
@@ -225,7 +214,7 @@ class WindowsTests(BasePlatformTests):
         # Wrap the following bulk of setup and msbuild invocation testing in a try-finally because any exception,
         # failure, or success must always clean up any of the suffixed build dir folders that may have been generated.
         try:
-            # Since this 
+            # Since this
             self.init(testdir, extra_args=['--genvslite', 'vs2022'])
             # We need to bear in mind that the BasePlatformTests framework creates and cleans up its own temporary
             # build directory.  However, 'genvslite' creates a set of suffixed build directories which we'll have