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

12 files changed, 12 insertions, 99 deletions

diff --git a/docs/refman/generatorbase.py b/docs/refman/generatorbase.py
index 08ce4920d..054180a18 100644
--- a/docs/refman/generatorbase.py
+++ b/docs/refman/generatorbase.py
@@ -1,16 +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.
 
 from abc import ABCMeta, abstractmethod
 import typing as T
diff --git a/docs/refman/generatorjson.py b/docs/refman/generatorjson.py
index a2edc184a..4c9807370 100644
--- a/docs/refman/generatorjson.py
+++ b/docs/refman/generatorjson.py
@@ -1,4 +1,4 @@
-# SPDX-License-Identifer: Apache-2.0
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2021 The Meson development team
 from __future__ import annotations
 
diff --git a/docs/refman/generatormd.py b/docs/refman/generatormd.py
index 79029c1d5..2c80ab023 100644
--- a/docs/refman/generatormd.py
+++ b/docs/refman/generatormd.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.
-
 from .generatorbase import GeneratorBase
 import re
 import json
diff --git a/docs/refman/generatorpickle.py b/docs/refman/generatorpickle.py
index 364a9886d..19e416ef9 100644
--- a/docs/refman/generatorpickle.py
+++ b/docs/refman/generatorpickle.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 pickle
 from pathlib import Path
 from .generatorbase import GeneratorBase
diff --git a/docs/refman/generatorprint.py b/docs/refman/generatorprint.py
index d80529603..b1ed37558 100644
--- a/docs/refman/generatorprint.py
+++ b/docs/refman/generatorprint.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.
-
 from .generatorbase import GeneratorBase
 from .model import ReferenceManual, Object, Function, DataTypeInfo, Type, ObjectType
 
diff --git a/docs/refman/generatorvim.py b/docs/refman/generatorvim.py
index ea725740f..9cdb9b27b 100644
--- a/docs/refman/generatorvim.py
+++ b/docs/refman/generatorvim.py
@@ -1,4 +1,4 @@
-# SPDX-License-Identifer: Apache-2.0
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2023 The Meson development team
 from __future__ import annotations
 
diff --git a/docs/refman/jsonschema.py b/docs/refman/jsonschema.py
index 283d3a2d9..e8ace7891 100644
--- a/docs/refman/jsonschema.py
+++ b/docs/refman/jsonschema.py
@@ -1,4 +1,4 @@
-# SPDX-License-Identifer: Apache-2.0
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2021 The Meson development team
 
 import typing as T
diff --git a/docs/refman/loaderbase.py b/docs/refman/loaderbase.py
index e64134f55..39c92bf09 100644
--- a/docs/refman/loaderbase.py
+++ b/docs/refman/loaderbase.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.
-
 from abc import ABCMeta, abstractmethod
 from pathlib import Path
 import re
diff --git a/docs/refman/loaderpickle.py b/docs/refman/loaderpickle.py
index 722fedf05..8e7a25f56 100644
--- a/docs/refman/loaderpickle.py
+++ b/docs/refman/loaderpickle.py
@@ -1,4 +1,4 @@
-# SPDX-License-Identifer: Apache-2.0
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2021 The Meson development team
 
 from pathlib import Path
diff --git a/docs/refman/loaderyaml.py b/docs/refman/loaderyaml.py
index e7ec57a7e..15ba5909d 100644
--- a/docs/refman/loaderyaml.py
+++ b/docs/refman/loaderyaml.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.
-
 from .loaderbase import LoaderBase
 from .model import (
     Type,
diff --git a/docs/refman/main.py b/docs/refman/main.py
index 9a3d16a61..f6cdf49e7 100644
--- a/docs/refman/main.py
+++ b/docs/refman/main.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.
-
 from pathlib import Path
 import argparse
 import typing as T
diff --git a/docs/refman/model.py b/docs/refman/model.py
index 0c65c5835..51d4ca24a 100644
--- a/docs/refman/model.py
+++ b/docs/refman/model.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.
-
 from dataclasses import dataclass, field
 from enum import Enum
 import typing as T