databases/cego: update 2.37.1 -> 2.37.3

• Fix in CegoClient, the new comment logic by using Tokenizer does not work ( '-' characters are detected as comment tokens ). Code replaced by using posStr chain function
• Adaption in CegoMain to also parse comment lines in a more sophisticated way ( same as in CegoMain ), just relevant for server batch mode
• Optimization in CegoDistCuror::joinSetup, the join predicate is now analysed in a way, that a condition list is created ( via makeCNF and createCondition methods in CegoQueryHelper ). The condition list then is analysed to achieve a better cursor condition which results in improved index usage

Submitted by: Bjoern Lemke <lemke@lemke-it.com>