Added CATCH_CONFIG_CPP11_LONG_LONG support

include/internal/catch_xmlwriter.hpp

@@ -10,6 +10,7 @@
 
 #include "catch_stream.h"
 #include "catch_compiler_capabilities.h"
+#include "catch_suppress_warnings.h"
 
 #include <sstream>
 #include <string>
@@ -231,4 +232,6 @@ namespace Catch {
     };
 
 }
+#include "catch_reenable_warnings.h"
+
 #endif // TWOBLUECUBES_CATCH_XMLWRITER_HPP_INCLUDED