Copyright for sagemath source package in Bullseye

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License: GPL-2+

Files: debian/*
Copyright: Copyright (C) 2013-2016 Jerome Benoit, Tobias Hansen, Ximin Luo, Julien Puydt, Felix Salfelder
License: GPL-2+

Files: sage/src/sage/game_theory/*
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Files: sage/build/pkgs/cddlib/patches/random.*
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Comment:
 The file sage/src/doc/en/reference/history_and_license/index.rst contains the incorrect
 statement "All documentation is released under the GNU Free Documentation License."
 This is in contradiction to several statements placing documentation under CC-BY-SA-3.0,
 e.g. in sage/src/doc/en/reference/index.rst.
 This oversight was fixed in the upstream git repo, the reference to the GFDL was removed.
 See
 https://trac.sagemath.org/ticket/22041
 https://git.sagemath.org/sage.git/diff?id=20bd83fbed668c9f7beaad9c1d8c21c95808a785
 https://groups.google.com/forum/#!topic/sage-devel/78zfWLa1ohE

Files: sage/src/sage/rings/bernmm/*
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Files: sage/m4/ax_cxx_compile_stdcxx_11.m4
Copyright: Copyright (c) 2008 Benjamin Kosnik 
           Copyright (c) 2012 Zack Weinberg 
           Copyright (c) 2013 Roy Stogner 
           Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov 
           Copyright (c) 2015 Paul Norman 
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