File autoconf2.60.patch of Package libconfig

From: Jan Engelhardt <ej@inai.de>
Date: 2025-05-29 09:03:06.799019252 +0200
Upstream: no

openSUSE Leap 15.6 does not have autoconf 2.70
(AC_CHECK_INCLUDES_DEFAULT).
---
 configure.ac |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: libconfig-1.8/configure.ac
===================================================================
--- libconfig-1.8.orig/configure.ac
+++ libconfig-1.8/configure.ac
@@ -70,7 +70,7 @@ fi;
 
 
 dnl Checks for header files.
-AC_CHECK_INCLUDES_DEFAULT
+AC_HEADER_STDC
 
 AC_CHECK_HEADERS(unistd.h stdint.h xlocale.h)