databases/cego: update 2.49.7 -> 2.49.8

• Added patches for querycache. The CegoQueryCache::addEntry method now is limited to QUERYCACHE_MAXTRY tries to add an entry. Otherwise numFail counter is increaed, which is monitored for the query cache. This should resolve deadlocks in smoother way ( no more lock timeouts ) in case of other db thread have the requested querycache slot in use. For performance reasons, CegoQueryCacheEntry::calcSize was introduced to just calculate the entry size in the constructor.
• Added lockId for lock objects in CegoBufferPool and CegoQueryCache