Fix incorrect behavior of \u2028 and \u2029 characters in JSON.stringify

JSON.stringify

// @see http://www.thespanner.co.uk/2011/07/25/the-json-specification-is-now-wrong/
// fix it via RegExp and feature detection
if (JSON.stringify("\u2028") == '"\u2028"') {
  JSON.stringify = function (stringify) {
    function place(m) {
      return "\\u202" + (m == "\u2028" ? "8" : "9");
    }
    var re = /\u2028|\u2029/g;
    return function fixed(data) {
      return stringify(data).replace(re, place);
    };
  }(JSON.stringify);
}