Lithium timestamp fix

gistfile1.aw

<?php
case 'timestamp':
				if ($value === 'CURRENT_TIMESTAMP') {
					return 'NULL';
				} else if (is_numeric($value)) {
					return $this->connection->quote(date('Y-m-d H:i:s', $value));
				} else if (is_string($value)) {
					return $this->connection->quote(date('Y-m-d H:i:s', strtotime($value)));
				} else {
					throw new InvalidArgumentException('given value for date is invalid');
				}