databases/cego: 2.47.7 -> 2.47.11

• Fix in CegoDistManager::startTableSet, the current lsn has to be setup before performing the cleanup option. cleanup uses bufferFix which might result in a checkpoint. For this the current lsn has to be setup
• In CegoQuery, added execSchema which is copied for each execution call from _schema ( to have a virgin schema definition ). The execSchema then is enriched in the appropriate way. For the insert query, an addExprList variable was decleare to store the addition needed expression to complete the insert value list ( instead of adding it to _exprListArray ). After performing the query, the allocated and inserted expression have to be deleted. This implementation seems to be more useful for procedure based queries, where the intiantiated CegoQuery object is executed multiple times
• In CegoDistManager, reload message for views, procedure and trigger is avoided now ( since this occurs for each db thread during startup )
• In CegoAttrComp::setup(ListT** pJoinBuf, int offset) the _isSetup flag was not set to true for the posSetup case. This might lead to invalid error message. See https://www.lemke-it.com/litexec?request=pubnews for details
• Fix in CegoGroupSpace::getValueForAgg, The return value ( of type CegoFieldValue ) must be converted to a local copy, since the reference to the bufferpool might be invalidated