Add dir suffix to Env.ReferenceAssembyPath

Author: mythz

src/ServiceStack.Text/Env.cs

@@ -106,7 +106,7 @@ public static string ReferenceAssembyPath
                         }
                         if (v4Dirs.Length > 0)
                         {
-                            referenceAssembyPath = v4Dirs[v4Dirs.Length - 1]; //latest v4
+                            referenceAssembyPath = v4Dirs[v4Dirs.Length - 1] + @"\"; //latest v4
                         }
                         else
                         {

tests/ServiceStack.Text.Tests/PclApiTests.cs

@@ -12,6 +12,10 @@ public void Can_scan_reference_assemblies()
 
             PclExport.Instance.GetDirectoryNames(refDir).PrintDump();
             PclExport.Instance.GetDirectoryNames(refDir, "v4*").PrintDump();
+
+            var winPath = PclExport.Instance.GetEnvironmentVariable("SYSTEMROOT") ?? @"C:\Windows";
+            var gacPath = winPath + @"\Microsoft.NET\Framework\";
+            PclExport.Instance.GetDirectoryNames(gacPath, "v4*").PrintDump();
         }
     }
 }