Document PHP 5.5 MySQLi parameters

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@330227 c90b9560-bf6c-de11-be94-00142212c4b1
Document $link parameter

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@330228 c90b9560-bf6c-de11-be94-00142212c4b1