2964 need POSIX 2008 locale object support

@@ -88,10 +88,21 @@
 $endif
 $if _x86 && _ELF64
 $add amd64
 $endif
 
+SYMBOL_VERSION ILLUMOS_0.5 {    # Illumos additions
+    protected:
+        strftime_l;
+        nl_langinfo_l;
+        duplocale;
+        freelocale;
+        newlocale;
+        querylocale;
+        uselocale;
+} ILLUMOS_0.4;
+
 SYMBOL_VERSION ILLUMOS_0.4 {    # Illumos additions
     protected:
         pipe2;
         dup3;
         mkostemp;