Fix Upgrade Error

Fatal error:  Call to undefined method Tools::nl2br() in

/home/public_html/modules/autoupgrade/db/Db.php on line 626

Thank to Torbz

http://forge.prestashop.com/browse/PSCFV-7719

http://www.prestashop.com/forums/index.php?/topic/214778-toolsnl2br-error-after-upgraded-from-149-to-153