Vacation plugin issue with Roundcube 0.95

Vacation plugin not compatible with Roundcube 0.95, due to changes in the way roundcube access database.

To fix this, replace:

	$db = new rcube_mdb2($dsn, '', FALSE);

with:

	if (!class_exists('rcube_db')) {
		$db = new rcube_mdb2($dsn, '', FALSE);
	} else {
		$db = rcube_db::factory($dsn, '', FALSE);
	}

in /plugins/vacation/lib/drivers/sql.php lines 34 and 173 web design