databases/cego: update 2.52.57 -> 2.52.59

• Improved input handling in CegoClient. For interactive mode, trailing LF, CR and multiple semicolons are cut now.
• Added command line option lockexpire with integer parameter seconds exceeded. If set, this option will check for the configured daemon lockfile and if the timestamp of the lockfile is older than now - seconds exceeded, the lock file is removed and the database is started. Database crash recovery seems to be stable, so this option is made available.
• In CegoDbThread::serveRequest, added further tableset states ( BACKUP, CHECKPOINT ) where sessions are accepted