fuel/core — pull request #1805 by KenjiOhtsuka (2014-12-14 13:44:08+00:00)
Title: added missing comments and modify existing comments

* `classes/arr.php`
* modified existing comments
* `classes/crypt.php`
* modified existing comments
* `classes/database/mysql/connection.php`
* added missing comments
* `classes/database/mysqli/connection.php`
* added missing comments
* `classes/dbutil.php`
* added missing comments
* modified comment spacing, from tab to space
* `classes/router.php`
* added missing comments
* modified comment spacing, from tab to space