This is needed to run Python on the Hurd, especially during the build of
python-boot0.

Adapted from https://salsa.debian.org/glibc-team/glibc/-/blob/glibc-2.31/debian/patches/hurd-i386/unsubmitted-clock_t_centiseconds.diff

    commit d57f2f9b4bd007846af2fb4217486ea572579010
    Author: Richard Braun <rbraun@sceen.net>
    Date:   Tue Aug 27 11:35:31 2013 +0200

        Express CPU time (clock_t of times(2)) in centiseconds

From 170c292b643fdc1eb56881e6592b07c0c019993e Mon Sep 17 00:00:00 2001
From: Jan Nieuwenhuizen <janneke@gnu.org>
Date: Mon, 2 Mar 2020 18:28:54 +0100
Subject: [PATCH 1/2] Express CPU time (clock_t) in centiseconds

---
 sysdeps/mach/hurd/clock.c     | 8 ++++----
 sysdeps/mach/hurd/getclktck.c | 5 ++---
 sysdeps/mach/hurd/setitimer.c | 2 +-
 sysdeps/mach/hurd/times.c     | 2 +-
 4 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/sysdeps/mach/hurd/clock.c b/sysdeps/mach/hurd/clock.c
index 7cb42df786..4db49b579d 100644
--- a/sysdeps/mach/hurd/clock.c
+++ b/sysdeps/mach/hurd/clock.c
@@ -44,10 +44,10 @@ clock (void)
   if (err)
     return __hurd_fail (err);
 
-  total = bi.user_time.seconds * 1000000 + bi.user_time.microseconds;
-  total += tti.user_time.seconds * 1000000 + tti.user_time.microseconds;
-  total += bi.system_time.seconds * 1000000 + bi.system_time.microseconds;
-  total += tti.system_time.seconds * 1000000 + tti.system_time.microseconds;
+  total = bi.user_time.seconds * 100 + bi.user_time.microseconds / 10000;
+  total += tti.user_time.seconds * 100 + tti.user_time.microseconds / 10000;
+  total += bi.system_time.seconds * 100 + bi.system_time.microseconds / 10000;
+  total += tti.system_time.seconds * 100 + tti.system_time.microseconds / 10000;
 
   return total;
 }
diff --git a/sysdeps/mach/hurd/getclktck.c b/sysdeps/mach/hurd/getclktck.c
index 943e36e805..5a3cf0930b 100644
--- a/sysdeps/mach/hurd/getclktck.c
+++ b/sysdeps/mach/hurd/getclktck.c
@@ -18,12 +18,11 @@
 
 #include <time.h>
 
-/* Return frequency of `times'.
-   Since Mach reports CPU times in microseconds, we always use 1 million.  */
+/* Return frequency of `times'.  */
 int
 __getclktck (void)
 {
-  return 1000000;
+  return 100;
 }
 
 /* Before glibc 2.2, the Hurd actually did this differently, so we
diff --git a/sysdeps/mach/hurd/setitimer.c b/sysdeps/mach/hurd/setitimer.c
index b16f4ddd5d..8bf1464830 100644
--- a/sysdeps/mach/hurd/setitimer.c
+++ b/sysdeps/mach/hurd/setitimer.c
@@ -43,7 +43,7 @@ quantize_timev<tr class='logheader'><td><span title='2019-09-16 10:22:35 +0200'>2019-09-16</span></td><td class='logsubject'><a href='/guix/commit/doc?id=ec36339dfd2241cd518bb86b6714fc3b340afa95'>services: certbot: Add --manual-public-ip-logging-ok for manual challenges</a></td><td>Carlo Zancanaro</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/services/certbot.scm (certbot-command): Add
  --manual-public-ip-logging-ok flag to the certbot command when doing a
  manual challenge.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;


</td></tr>
<tr class='logheader'><td><span title='2019-09-11 18:05:38 +0200'>2019-09-11</span></td><td class='logsubject'><a href='/gu