Corrected copyright notices and info about adding copyright info

Until now, the files where the people were meant to change didn't have a
proper copyright notice (for example `Copyright (C) YOUR NAME.'). This was
wrong because the license does not convey copyright ownership. So the name
of the file's original author must always be included and when people
modify it (and add their own copyright-able modifications).

With this commit, the file's original author (and email) are added to the
copyright notice and when more than one person modified a file, both names
have their individual copyright notice.

Based on this, the description for adding a copyright notice in
`README-hacking.md' has also been modified.

8 files changed, 9 insertions, 30 deletions

diff --git a/tex/src/delete-me-demo.tex b/tex/src/delete-me-demo.tex
index 2575e61..abd45f6 100644
--- a/tex/src/delete-me-demo.tex
+++ b/tex/src/delete-me-demo.tex
@@ -1,9 +1,6 @@
 %% Plot the demonstration image and its histogram.
 %
-%% Original author:
-%%     Mohammad Akhlaghi <mohammad@akhlaghi.org>
-%% Contributing author(s):
-%% Copyright (C) 2019, Mohammad Akhlaghi.
+%% Copyright (C) 2019 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This template is free software: you can redistribute it and/or modify it
 %% under the terms of the GNU General Public License as published by the
diff --git a/tex/src/delete-me.tex b/tex/src/delete-me.tex
index 1382b66..12fd3b7 100644
--- a/tex/src/delete-me.tex
+++ b/tex/src/delete-me.tex
@@ -1,9 +1,6 @@
 %% PGFPlots code to plot a random set of numbers as demo
 %%
-%% Original author:
-%%     Mohammad Akhlaghi <mohammad@akhlaghi.org>
-%% Contributing author(s):
-%% Copyright (C) 2019, Mohammad Akhlaghi.
+%% Copyright (C) 2019 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This template is free software: you can redistribute it and/or modify it
 %% under the terms of the GNU General Public License as published by the
diff --git a/tex/src/preamble-biblatex.tex b/tex/src/preamble-biblatex.tex
index 602c5a1..b4c02f9 100644
--- a/tex/src/preamble-biblatex.tex
+++ b/tex/src/preamble-biblatex.tex
@@ -12,10 +12,7 @@
 %%     helps in clearly identifying the files and avoiding places that
 %%     complain about `.bib' files.
 %
-%% Original author:
-%%     Mohammad Akhlaghi <mohammad@akhlaghi.org>
-%% Contributing author(s):
-%% Copyright (C) 2018-2019, Mohammad Akhlaghi.
+%% Copyright (C) 2018-2019 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This template is free software: you can redistribute it and/or modify it
 %% under the terms of the GNU General Public License as published by the
diff --git a/tex/src/preamble-header.tex b/tex/src/preamble-header.tex
index b2ca364..ce9f93e 100644
--- a/tex/src/preamble-header.tex
+++ b/tex/src/preamble-header.tex
@@ -1,10 +1,7 @@
 %% The headers: title, authors, top of pages and section title formatting
 %% of the final LaTeX file are configured here.
 %
-%% Original author:
-%%     Mohammad Akhlaghi <mohammad@akhlaghi.org>
-%% Contributing author(s):
-%% Copyright (C) 2018-2019, Mohammad Akhlaghi.
+%% Copyright (C) 2018-2019 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This template is free software: you can redistribute it and/or modify it
 %% under the terms of the GNU General Public License as published by the
diff --git a/tex/src/preamble-necessary.tex b/tex/src/preamble-necessary.tex
index cdb6137..2abcb9e 100644
--- a/tex/src/preamble-necessary.tex
+++ b/tex/src/preamble-necessary.tex
@@ -4,10 +4,7 @@
 %% LaTeX usages. However, if any are not needed in your work, please feel
 %% free to remove them.
 %
-%% Original author:
-%%     Mohammad Akhlaghi <mohammad@akhlaghi.org>
-%% Contributing author(s):
-%% Copyright (C) 2018-2019, Mohammad Akhlaghi.
+%% Copyright (C) 2018-2019 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This template is free software: you can redistribute it and/or modify it
 %% under the terms of the GNU General Public License as published by the
diff --git a/tex/src/preamble-pgfplots.tex b/tex/src/preamble-pgfplots.tex
index cd68658..bf6bbbd 100644
--- a/tex/src/preamble-pgfplots.tex
+++ b/tex/src/preamble-pgfplots.tex
@@ -40,10 +40,7 @@
 %%    hasn't changed since the last build. TiKZ/PGFPlots won't rebuild the
 %%    plot.
 %
-%% Original author:
-%%     Mohammad Akhlaghi <mohammad@akhlaghi.org>
-%% Contributing author(s):
-%% Copyright (C) 2018-2019, Mohammad Akhlaghi.
+%% Copyright (C) 2018-2019 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This template is free software: you can redistribute it and/or modify it
 %% under the terms of the GNU General Public License as published by the
diff --git a/tex/src/preamble-style.tex b/tex/src/preamble-style.tex
index 54f3598..0c97151 100644
--- a/tex/src/preamble-style.tex
+++ b/tex/src/preamble-style.tex
@@ -6,10 +6,7 @@
 %% style defined here as a preamble. To ignore it, uncomment or delete the
 %% respective line in `paper.tex'.
 %%
-%% Original author:
-%%     Mohammad Akhlaghi <mohammad@akhlaghi.org>
-%% Contributing author(s):
-%% Copyright (C) 2019, Mohammad Akhlaghi.
+%% Copyright (C) 2019 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This template is free software: you can redistribute it and/or modify it
 %% under the terms of the GNU General Public License as published by the
diff --git a/tex/src/references.tex b/tex/src/references.tex
index de4682f..6f884df 100644
--- a/tex/src/references.tex
+++ b/tex/src/references.tex
@@ -1,8 +1,8 @@
-%% Copyright (C) 2018-2019, Mohammad Akhlaghi.
-%
 %% Non-software BibTeX entries. The software-specific BibTeX entries are
 %% stored in a `*.tex' file under the `tex/dependencies' directory.
 %
+%% Copyright (C) 2018-2019 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%
 %% Copying and distribution of this file, with or without modification,
 %% are permitted in any medium without royalty provided the copyright
 %% notice and this notice are preserved.  This file is offered as-is,