databases/cego: update 2.48.25 -> 2.48.27

• Patch addd for tableset stop procedure. With the new optimized stored procedure handling ( CegoFunction module ), the object cleanup must be done BEFORE the tableset is finally stopped. Otherwise an uncaught exception occurs ( tableset not online ) which results in database crash after tableset shutdown. Several modules have been modified for this
• In CegoFunction constructors, added _pProc = 0 initialization for decoding and fromElement constructors. This avoids a set fault, in case of database recovery, when a predicate expression with user function is dedoded from log file

Author: Björn Lemke <lemke@lemke-it.com>