-Fixed tests on non-English Windows

Src/Newtonsoft.Json.Tests/JsonTextReaderTest.cs

@@ -2210,7 +2210,7 @@ bye", reader.Value);
     {
       double d;
 
-      d = Convert.ToDouble("6.0221418e23");
+      d = Convert.ToDouble("6.0221418e23", CultureInfo.InvariantCulture);
       Console.WriteLine(d.ToString(new CultureInfo("fr-FR")));
       Console.WriteLine(d.ToString("0.#############################################################################"));
 

Src/Newtonsoft.Json.Tests/TestObjects/Store.cs

@@ -47,7 +47,7 @@ namespace Newtonsoft.Json.Tests.TestObjects
     public Store()
     {
       Mottos.Add("Hello World");
-      Mottos.Add("鲣�能\\'{new Date(12345);}[222]_礍渤~");
+      Mottos.Add("öäüÖÄÜ\\'{new Date(12345);}[222]_µ@²³~");
       Mottos.Add(null);
       Mottos.Add(" ");