Configuration: no dependency on /bin/sh and useful run-time options

SUMMARY: no change necessary in your project, this commit only involves
changes in how already-existing software are built. Some handy options have
also been added to the top-level project script and the copyright years
have been updated.

Until now, if the host's '/bin/sh' had conflicts with the Maneage
environment, the configuration of Maneage would crash as soon as we entered
the building of high-level software. The full scenario is described in the
comments of the newly added 'reproduce/software/shell/prep-source.sh'. This
is most relevant when building older Maneage'd project in newer
environments.

With this commit, the following changes were made to avoid the problem
above:

  - Maneage edits the source code of all installed software to replace
    '/bin/sh' with Maneage's own shell before the programs are
    built. Through this, we were able to solve the problem described
    above.

  - The portable '#!/usr/bin/env sh' shebangs are now used at the start of
    the scripts that run during configure time so it uses the first
    available shell that it finds in its PATH (the system's before Dash is
    built), then Dash, and after Dash is built, Bash.

  - For TeXLive, since we don't install it from source, it was necessary to
    add the libraries necessary for the local '/bin/sh' in LD_LIBRARY_PATH.

Some high-level options have been added to the './project' script to
simplify certain operations:

  --keep-going: do not stop upon the first crash, but keep going on to
    build targets until all build-able targets have been built. This is
    very useful for debugging large pipelines and allows you to isolate the
    problematic part of your project.

  --highlight-all: equivalent to calling both '--highlight-new' &
    '--highlight-notes'.

9 files changed, 9 insertions, 9 deletions

diff --git a/tex/README.md b/tex/README.md
index 4963bf5..f100c76 100644
--- a/tex/README.md
+++ b/tex/README.md
@@ -1,7 +1,7 @@
 Directory containing LaTeX-related files
 ----------------------------------------
 
-Copyright (C) 2018-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>\
+Copyright (C) 2018-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>\
 See the end of the file for license conditions.
 
 This directory contains directories to various components the LaTeX part of
diff --git a/tex/src/delete-me-image-histogram.tex b/tex/src/delete-me-image-histogram.tex
index 37618ec..6201c31 100644
--- a/tex/src/delete-me-image-histogram.tex
+++ b/tex/src/delete-me-image-histogram.tex
@@ -1,6 +1,6 @@
 %% Plot the demonstration image and its histogram.
 %
-%% Copyright (C) 2019-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2019-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This file 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-squared.tex b/tex/src/delete-me-squared.tex
index 968b4d7..51e5f5b 100644
--- a/tex/src/delete-me-squared.tex
+++ b/tex/src/delete-me-squared.tex
@@ -1,6 +1,6 @@
 %% PGFPlots code to plot a random set of numbers as demo
 %%
-%% Copyright (C) 2019-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2019-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This file 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 fd4bf9d..e80d7d8 100644
--- a/tex/src/preamble-biblatex.tex
+++ b/tex/src/preamble-biblatex.tex
@@ -12,7 +12,7 @@
 %%     helps in clearly identifying the files and avoiding places that
 %%     complain about '.bib' files.
 %
-%% Copyright (C) 2018-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2018-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This file 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-maneage-default-style.tex b/tex/src/preamble-maneage-default-style.tex
index f811743..b7aa811 100644
--- a/tex/src/preamble-maneage-default-style.tex
+++ b/tex/src/preamble-maneage-default-style.tex
@@ -6,7 +6,7 @@
 %% style defined here as a preamble. To ignore it, uncomment or delete the
 %% respective line in 'paper.tex'.
 %
-%% Copyright (C) 2019-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2019-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This file 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-maneage.tex b/tex/src/preamble-maneage.tex
index 5dc89fe..9e6cc5a 100644
--- a/tex/src/preamble-maneage.tex
+++ b/tex/src/preamble-maneage.tex
@@ -1,6 +1,6 @@
 %% Preamble for Maneage-related features.
 %
-%% Copyright (C) 2020-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2020-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This LaTeX file is part of Maneage. Maneage is free software: you can
 %% redistribute it and/or modify it under the terms of the GNU General
diff --git a/tex/src/preamble-pgfplots.tex b/tex/src/preamble-pgfplots.tex
index 86f649c..74f5290 100644
--- a/tex/src/preamble-pgfplots.tex
+++ b/tex/src/preamble-pgfplots.tex
@@ -40,7 +40,7 @@
 %%    hasn't changed since the last build. TiKZ/PGFPlots won't rebuild the
 %%    plot.
 %
-%% Copyright (C) 2018-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2018-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %
 %% This file is part of Maneage (https://maneage.org).
 %
diff --git a/tex/src/preamble-project.tex b/tex/src/preamble-project.tex
index 76603f2..adb99b7 100644
--- a/tex/src/preamble-project.tex
+++ b/tex/src/preamble-project.tex
@@ -4,7 +4,7 @@
 %% LaTeX usages. However, if any are not needed in your work, please feel
 %% free to remove them.
 %
-%% Copyright (C) 2018-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2018-2025 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 %% Copyright (C) YYYY Your Name <your@email.address>
 %
 %% This file is free software: you can redistribute it and/or modify it
diff --git a/tex/src/references.tex b/tex/src/references.tex
index e4117ae..ae3e5d1 100644
--- a/tex/src/references.tex
+++ b/tex/src/references.tex
@@ -1,7 +1,7 @@
 %% Non-software BibTeX entries. The software-specific BibTeX entries are
 %% stored in a '*.tex' file under the 'tex/dependencies' directory.
 %
-%% Copyright (C) 2018-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+%% Copyright (C) 2018-2025 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