VC Express doesn't support folders, ignore USE_FOLDER property

Source/cmGlobalVisualStudio10Generator.cxx

@@ -278,3 +278,9 @@ void cmGlobalVisualStudio10Generator::PathTooLong(
     this->LongestSource.SourceRel = sfRel;
     }
 }
+
+//----------------------------------------------------------------------------
+bool cmGlobalVisualStudio10Generator::UseFolderProperty()
+{
+  return IsExpressEdition() ? false : cmGlobalGenerator::UseFolderProperty();
+}

Source/cmGlobalVisualStudio10Generator.h

@@ -88,6 +88,9 @@ protected:
 
   std::string PlatformToolset;
   bool ExpressEdition;
+
+  bool UseFolderProperty();
+
 private:
   struct LongestSourcePath
   {