setMessages reorder messages key

[karakum]

From http://php.net/array_merge

Values in the input array with numeric keys will be renumbered with incrementing keys starting from zero in the result array.

In FileUpload.php used UPLOADERR* integer constants as messages keys. So if I set my own messages I got this:

Array ( [0] => The uploaded file exceeds the upload_max_filesize directive in php.ini [1] => The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form [2] => The uploaded file was only partially uploaded [3] => No file was uploaded [4] => Missing a temporary folder [5] => Failed to write file to disk [6] => A PHP extension stopped the file upload [7] => The upload file exceeds the post_max_size or the upload_max_filesize directives in php.ini [8] => Размер файла превышает максимальный размер заданый в php.ini [9] => Размер файла превышает максимальный размер переданный в форме [10] => Файл был загружен не полностью [11] => Файл не был загружен [12] => Отсутствует временный каталог [13] => Ошибка записи на диск [14] => A PHP extension stopped the file upload [15] => Размер файла превышает максимальный размер )