databases/cego: update 2.38.7 -> 2.38.9

• Introduction of new functions ascii ( get ascii character for numeric value ) , ldiv and lmod ( div and mod operation for long values )
• Modification in CegoFunction::evalFieldValue. To allow recursive calls of user defined functions and procedures, dedicated procedure instances are created for each call. This is done by parsing the procedure text via CegoAction

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