Copyright for node-gyp source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: node-gyp
Upstream-Contact: https://github.com/nodejs/node-gyp/issues
Source: https://github.com/nodejs/node-gyp

Files: *
Copyright: 2012-2013, Nathan Rajlich 
License: Expat

Files: gyp/*
Copyright: 2009-2013 Google Inc. All rights reserved.
 2011-2013 The Chromium Authors. All rights reserved.
 2013 Yandex LLC
License: BSD-3-clause~Google

Files: debian/*
Copyright: 2013-2019, Jérémy Lal 
 2020, Xavier Guimard 
License: Expat

Files: debian/tests/test_modules/env-paths/*
Copyright: Sindre Sorhus 
License: Expat

License: Expat
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 .
 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
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 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.

License: BSD-3-clause~Google
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are
 met:
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  * Redistributions of source code must retain the above copyright
 notice, this list of conditions and the following disclaimer.
  * Redistributions in binary form must reproduce the above
 copyright notice, this list of conditions and the following disclaimer
 in the documentation and/or other materials provided with the
 distribution.
  * Neither the name of Google Inc. nor the names of its
 contributors may be used to endorse or promote products derived from
 this software without specific prior written permission.
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