Merge branch 'maint-0.2.9' into release-0.2.9

changes/ticket31673

@@ -0,0 +1,3 @@
+  o New system requirements (build system):
+    - Do not include the deprecated <sys/sysctl.h> on Linux or Windows system.
+      Closes 31673;

src/common/compat.c

@@ -27,9 +27,6 @@
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
-#ifdef HAVE_SYS_SYSCTL_H
-#include <sys/sysctl.h>
-#endif
 #ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
 #endif
@@ -70,6 +67,11 @@
 #include <sys/capability.h>
 #endif
 
+/* Now deprecated in Linux GLIBC */
+#if defined(HAVE_SYS_SYSCTL_H) && !defined(_WIN32) && !defined(__linux__)
+#include <sys/sysctl.h>
+#endif
+
 #ifdef _WIN32
 #include <conio.h>
 #include <wchar.h>