In CegoAction, make the following distribution ready
- show systemspace
- check index
- create, list set, drop counter
Manage append mode also for distributed queries
Idea : With session request append mode is set up

- read performance can be improved by replacing XML protocol by native encoding model

- transaction exception handling should be improved 
  ( idea : before commit or rollback, rename rb-file to commitTID or rollbackTID,
    so if an exception occurs during commit or rollback, it can be decided to commit or rollback
    the transaction again )

  
- user management with new role concept should be adapted for distributed mode    
