databases/cego: update 2.52.10 -> 2.52.12

• Fix added in CegoQueyHelper::evalAttrCond, COMPLETE value must be returned in flArray loop and if not found PARTIAL must be returned ( return was missing )
• Patch in CegoTerm::getSelectQueryList to retrieve subselects also for case conditions and nested conditions. So this affects also class CegoFactor, CegoCaseCond and CegoCondition which have to provide the getSelectQueryList method. This extension is required to retrieve appropriate table sets for query cache decicisions