Removin use of File class in favor of SplFileObject

cake/libs/log/file_log.php

@@ -17,9 +17,7 @@
  * @since         CakePHP(tm) v 1.3
  * @license       MIT License (http://www.opensource.org/licenses/mit-license.php)
  */
-if (!class_exists('File')) {
-	require LIBS . 'file.php';
-}
+
 /**
  * File Storage stream for Logging.  Writes logs to different files
  * based on the type of log it is.
@@ -69,9 +67,9 @@ public function write($type, $message) {
 			$filename = $this->_path . $type . '.log';
 		}
 		$output = date('Y-m-d H:i:s') . ' ' . ucfirst($type) . ': ' . $message . "\n";
-		$log = new File($filename, true);
-		if ($log->writable()) {
-			return $log->append($output);
+		$log = new SplFileObject($filename, 'a+');
+		if ($log->isWritable()) {
+			return $log->fwrite($output);
 		}
 	}
 }