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

1 files changed, 2 insertions, 14 deletions

diff --git a/mesonbuild/_typing.py b/mesonbuild/_typing.py
index d3cfa39d5..05ff2b3da 100644
--- a/mesonbuild/_typing.py
+++ b/mesonbuild/_typing.py
@@ -1,18 +1,6 @@
-# SPDX-License-Identifer: Apache-2.0
+# SPDX-License-Identifier: Apache-2.0
 # Copyright 2020 The Meson development team
-# Copyright © 2020-2021 Intel Corporation
-
-# 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.
+# Copyright © 2020-2023 Intel Corporation
 
 """Meson specific typing helpers.