[Patch] Quickform File maxFileSize rule

Hi, Short summary: The _ruleCheckMaxFileSize() method did not check for upload errors. Consider the following configuration: - Your INI only accepts 40MB - You set maxfilesize of a QF file element to 35MB - Somebody uploads a file that is 60MB. The form will validate because effectively the filesize of the temp file is 0 (it's not there). This is unexpected behaviour. This patch will check to see if the filesize does not exceed the INI max value or the hidden form variable MAX_FILE_SIZE. If it does exceed one of these, it will return false. The patched method uses constants available from PHP 4.3.0, but they can be replaced by integers (1 and 2, see: http://nl3.php.net/manual/en/features.file-upload.errors.php) Jeroen