PrestaShop/PrestaShop — pull request #645 by Shagshag (2013-08-13 10:29:25+00:00)
Title: [*] Project: Avoid _PS_DEBUG_SQL_ notice

_PS_DEBUG_SQL_ may be defined in defines.inc.php and in Db::__construct()
This avoid this notice :
Notice: Constant _PS_DEBUG_SQL_ already defined in \config\defines.inc.php on line 33