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.

7 files changed, 8 insertions, 8 deletions

diff --git a/reproduce/analysis/make/delete-me.mk b/reproduce/analysis/make/delete-me.mk
index f4c8600..325280d 100644
--- a/reproduce/analysis/make/delete-me.mk
+++ b/reproduce/analysis/make/delete-me.mk
@@ -1,6 +1,6 @@
 # Dummy Makefile to create a random dataset for plotting.
 #
-# Copyright (C) 2018-2022 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+# Copyright (C) 2018-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 #
 # This Makefile is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/reproduce/analysis/make/initialize.mk b/reproduce/analysis/make/initialize.mk
index 7314184..9e8db4a 100644
--- a/reproduce/analysis/make/initialize.mk
+++ b/reproduce/analysis/make/initialize.mk
@@ -1,6 +1,6 @@
 # Project initialization.
 #
-# Copyright (C) 2018-2022 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+# Copyright (C) 2018-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 #
 # This Makefile is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -538,7 +538,7 @@ $(inputdatasets): $(indir)/%: | $(indir) $(lockdir)
 	else
 	  touch $(lockdir)/download
 	  $(downloadwrapper) "wget $$authopt --no-use-server-timestamps -O" \
-	                     $(lockdir)/download $(INPUT-$*-url) $$unchecked
+	                     $(lockdir)/download "$(INPUT-$*-url)" $$unchecked
 	fi
 
 #	Set the checksum related variables.
diff --git a/reproduce/analysis/make/paper.mk b/reproduce/analysis/make/paper.mk
index 740dc7d..791108b 100644
--- a/reproduce/analysis/make/paper.mk
+++ b/reproduce/analysis/make/paper.mk
@@ -1,6 +1,6 @@
 # Build the final PDF paper/report.
 #
-# Copyright (C) 2018-2022 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+# Copyright (C) 2018-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 #
 # This Makefile is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/reproduce/analysis/make/prepare.mk b/reproduce/analysis/make/prepare.mk
index ebc2b4d..36f5294 100644
--- a/reproduce/analysis/make/prepare.mk
+++ b/reproduce/analysis/make/prepare.mk
@@ -1,6 +1,6 @@
 # Basic preparations, called by './project make'.
 #
-# Copyright (C) 2019-2022 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+# Copyright (C) 2019-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 #
 # This Makefile is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/reproduce/analysis/make/top-make.mk b/reproduce/analysis/make/top-make.mk
index d6e3822..460433b 100644
--- a/reproduce/analysis/make/top-make.mk
+++ b/reproduce/analysis/make/top-make.mk
@@ -1,6 +1,6 @@
 # Top-level Makefile (first to be loaded).
 #
-# Copyright (C) 2018-2022 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+# Copyright (C) 2018-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 #
 # This Makefile is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/reproduce/analysis/make/top-prepare.mk b/reproduce/analysis/make/top-prepare.mk
index 28dfc4a..930c2a9 100644
--- a/reproduce/analysis/make/top-prepare.mk
+++ b/reproduce/analysis/make/top-prepare.mk
@@ -4,7 +4,7 @@
 # are not included here. Please see that file for thorough comments on each
 # step.
 #
-# Copyright (C) 2019-2022 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+# Copyright (C) 2019-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 #
 # This Makefile is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/reproduce/analysis/make/verify.mk b/reproduce/analysis/make/verify.mk
index 25b3bec..aa026b5 100644
--- a/reproduce/analysis/make/verify.mk
+++ b/reproduce/analysis/make/verify.mk
@@ -1,6 +1,6 @@
 # Verify the project outputs before building the paper.
 #
-# Copyright (C) 2020-2022 Mohammad Akhlaghi <mohammad@akhlaghi.org>
+# Copyright (C) 2020-2023 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 #
 # This Makefile is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by