Copyright years: updated to 2023, accompanied by some minor fixes

SUMMARY: just house-cleaning, no need to do anything major in your
branch. Just update the copyright years in files that you have added.

Until now, the latest copyright years of the whole Maneage source code was
2022! As of this commit, we have already moved to 2023 for 5 months!
Furthermore, there were a few other minor issues that needed correction:

 - The URL to download input datasets wasn't quoted in 'initialize.mk' or
   the download script! As a result, when the input URL had characters that
   are meaningful to the shell (like '&'), the download command would not
   work.

 - The only program that had 'make check' in the 'basic.mk' programs was
   MPFR. At that stage, we still haven't built our own compiler at this
   stage, this is not accurate.

 - The 'pyerfa' and 'extension-helpers' packages in Python need
   'setuptools_scm' on some systems. But until now, it was not in the list
   of their prerequisites.

With this commit, all the issues above have been corrected.

5 files changed, 5 insertions, 5 deletions

diff --git a/reproduce/analysis/config/INPUTS.conf b/reproduce/analysis/config/INPUTS.conf
index 5970ae3..1090e44 100644
--- a/reproduce/analysis/config/INPUTS.conf
+++ b/reproduce/analysis/config/INPUTS.conf
@@ -104,7 +104,7 @@
 # also called '%' (if your local copy of the input dataset and the only
 # repository names are the same, be sure to set '%' accordingly).
 #
-# Copyright (C) 2018-2022 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+# Copyright (C) 2018-2023 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
diff --git a/reproduce/analysis/config/delete-me-squared-num.conf b/reproduce/analysis/config/delete-me-squared-num.conf
index 4df2101..c2fa79c 100644
--- a/reproduce/analysis/config/delete-me-squared-num.conf
+++ b/reproduce/analysis/config/delete-me-squared-num.conf
@@ -1,6 +1,6 @@
 # Number of samples in the demonstration analysis (to be deleted).
 #
-# Copyright (C) 2019-2022 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+# Copyright (C) 2019-2023 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
diff --git a/reproduce/analysis/config/metadata.conf b/reproduce/analysis/config/metadata.conf
index 0241136..7bafc4b 100644
--- a/reproduce/analysis/config/metadata.conf
+++ b/reproduce/analysis/config/metadata.conf
@@ -15,7 +15,7 @@
 # and the copyright license name and standard link to the fully copyright
 # license.
 #
-# Copyright (C) 2020-2022 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+# Copyright (C) 2020-2023 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
diff --git a/reproduce/analysis/config/pdf-build.conf b/reproduce/analysis/config/pdf-build.conf
index a57b529..2aa2e9a 100644
--- a/reproduce/analysis/config/pdf-build.conf
+++ b/reproduce/analysis/config/pdf-build.conf
@@ -12,7 +12,7 @@
 # LaTeX. Otherwise, a notice will just printed that, no PDF will be
 # created.
 #
-# Copyright (C) 2018-2022 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+# Copyright (C) 2018-2023 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
diff --git a/reproduce/analysis/config/verify-outputs.conf b/reproduce/analysis/config/verify-outputs.conf
index 37fc43c..db7751d 100644
--- a/reproduce/analysis/config/verify-outputs.conf
+++ b/reproduce/analysis/config/verify-outputs.conf
@@ -1,6 +1,6 @@
 # To enable verification of output datasets set this variable to 'yes'.
 #
-# Copyright (C) 2019-2022 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+# Copyright (C) 2019-2023 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