Merge branch 'non-linux' into 'master'

Include <utmpx.h>, fixing the build on GNU/Hurd

See merge request debian/shadow!26

debian/patches/series

@@ -9,3 +9,4 @@ debian/tests-libsubid-04_nss-fix-setting-basedir.patch
 debian/Adapt-login.defs-for-Debian.patch
 debian/Define-LOGIN_NAME_MAX-on-HURD.patch
 debian/Stop-building-programs-we-do-not-install.patch
+upstream/lib-user_busy.c-Include-utmpx.h.patch

debian/patches/upstream/lib-user_busy.c-Include-utmpx.h.patch

@@ -0,0 +1,26 @@
+From b2b37863a62af83deb21284ae156aa425bed0cb9 Mon Sep 17 00:00:00 2001
+From: Pino Toscano <toscano.pino@tiscali.it>
+Date: Tue, 10 Sep 2024 14:36:49 +0200
+Subject: [PATCH] lib/user_busy.c: Include <utmpx.h>
+
+Since:
+- utmpx APIs are used in non-Linux code blocks
+- <utmpx.h> is already unconditionally included in Linux parts in other
+  files
+then unconditionally include it in this file as well.
+
+Signed-off-by: Pino Toscano <toscano.pino@tiscali.it>
+---
+ lib/user_busy.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/lib/user_busy.c
++++ b/lib/user_busy.c
+@@ -17,6 +17,7 @@
+ #include <dirent.h>
+ #include <fcntl.h>
+ #include <unistd.h>
++#include <utmpx.h>
+ #include "defines.h"
+ #include "prototypes.h"
+ #ifdef ENABLE_SUBIDS