Make sure to execute test with english lang

autotests/kconfigtest.cpp

@@ -102,6 +102,16 @@ static inline QString kdeGlobalsPath() {
     return QDir::cleanPath(testConfigDir() + "..") + "/kdeglobals";
 }
 
+#ifndef Q_OS_WIN
+void initLocale()
+{
+    setenv("LC_ALL", "en_US.utf-8", 1);
+    setenv("TZ", "UTC", 1);
+}
+
+Q_CONSTRUCTOR_FUNCTION(initLocale)
+#endif
+
 void KConfigTest::initTestCase()
 {
     // ensure we don't use files in the real config directory