problem with libcpp resolved

dune/common/test/strtonumbertest.cc

@@ -184,11 +184,11 @@ int main()
 
     value = 1.5;
 
-    std::setlocale(LC_NUMERIC, "C");
+    setlocale(LC_NUMERIC, "C");
     T val0 = strTo<T>("1.5");
     test.check(cmp(value, val0), "Locale_C");
 
-    char* new_loc = std::setlocale(LC_NUMERIC, "de_DE.UTF-8");
+    char* new_loc = setlocale(LC_NUMERIC, "de_DE.UTF-8");
     if (new_loc) {
       T val1 = strTo<T>("1,5");
       test.check(cmp(value, val1), "Locale_de_DE");
@@ -196,7 +196,7 @@ int main()
       std::cout << "### skipped locale de_DE.UTF-8 test\n";
     }
 
-    std::setlocale(LC_NUMERIC, "C");
+    setlocale(LC_NUMERIC, "C");
     bool exception = false;
     try {
       T val2 = strTo<T>("1,5");