Patch taken from the Sage packaging system.

diff --git a/include/Lcommon.h b/include/Lcommon.h
index 1b3be43..bf40532 100644
--- a/include/Lcommon.h
+++ b/include/Lcommon.h
@@ -48,7 +48,7 @@ const bool outputSeries=true;	  // Whether to output the coefficients or just th
 
 // Loop i from m to n
 // Useful in tidying up most for loops
-#define loop(i,m,n) for(typeof(m) i=(m); i!=(n); i++)
+#define loop(i,m,n) for(auto i=(m); i!=(n); i++)
 
 // A class for calculations involving polynomials of small degree
 // Not efficient enough for huge polynomials
diff --git a/include/Lcommon_ld.h b/include/Lcommon_ld.h
index 86ae4df..33c560c 100644
--- a/include/Lcommon_ld.h
+++ b/include/Lcommon_ld.h
@@ -53,7 +53,7 @@ const bool outputSeries=true;	  // Whether to output the coefficients or just th
 
 // Loop i from m to n
 // Useful in tidying up most for loops
-#define loop(i,m,n) for(typeof(m) i=(m); i!=(n); i++)
+#define loop(i,m,n) for(auto i=(m); i!=(n); i++)
 
 // A class for calculations involving polynomials of small degree
 // Not efficient enough for huge polynomials
diff --git a/include/Lglobals.h b/include/Lglobals.h
index 60002e4..ca2606c 100644
--- a/include/Lglobals.h
+++ b/include/Lglobals.h
@@ -24,9 +24,9 @@
 #ifndef Lglobals_H
 #define Lglobals_H
 
+#include <valarray>
 using namespace std;
 
-#include <valarray>
 #ifdef USE_MPFR
     #include "Lgmpfrxx.h"
     typedef mpfr_class Double;
9511e0b5de7651786d9660f3d292'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/git.scm'>
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<div class='path'>path: <a href='/guix/log/?id=ba23ca977e1d9511e0b5de7651786d9660f3d292'>root</a>/<a href='/guix/log/tests?id=ba23ca977e1d9511e0b5de7651786d9660f3d292'>tests</a>/<a href='/guix/log/tests/git.scm?id=ba23ca977e1d9511e0b5de7651786d9660f3d292'>git.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/git.scm?id=ba23ca977e1d9511e0b5de7651786d9660f3d292&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-09-26 17:36:59 +0200'>2023-09-26</span></td><td><a href='/guix/commit/tests/git.scm?id=ba21eeb565fe414b3647173068a0f3eadd174c06'>tests: Assume ‘git’ is always available.</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/channels.scm (gpg+git-available?): Check for ‘gpg-command’
only.
Remove all ‘test-skip’ statements.
* tests/derivations.scm: Likewise.
* tests/git-authenticate.scm: Likewise.
* tests/git.scm: Likewise.
* tests/import-git.scm: Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-10-17 09:37:27 +0200'>2022-10-17</span></td><td><a href='/guix/commit/tests/git.scm?id=46f7011591601b4783b2dc2c7252c41564ca0140'>git: 'update-cached-checkout' returns the commit ID when given a tag.</a><span class='msg-avail'>...<span class='msg-tooltip'>Previously, starting with commit
efa578ecaece67366b4b0e2266de7c2faaa4ae54, 'update-cached-checkout' would
return the OID of the annotated tag the tag points to.  With this change
it returns the OID of the commit object in all cases.

* guix/git.scm (resolve-reference): In the 'tag' case, call
'tag-target-id' and 'tag-lookup' when OID designates an annotated tag.
* tests/git.scm ("update-cached-checkout, tag"): New test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-02-14 11:23:07 +0100'>2022-02-14</span></td><td><a href='/guix/commit/tests/git.scm?id=87d49346f3072f7b4343b6fb387ee5f9311493b7'>git: Add 'commit-descendant?'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/git.scm (commit-descendant?): New procedure.
* tests/git.scm ("commit-descendant?"): New test.
</span></span></td><td>Ludovic Courtès</td></tr>