Message Broker 6.0.2 Interim Fix 001

This contains fixes for the following problems:

1. Test Client
   d 57620 Stability problems with Unit Test client
   
2. ESQL
   d 56733 Incorrect function or procedure name
   
3. Mapping
   d 57577 WMB V6 mapping nodes stopped working
   d 57527 Select tabel join fail for same name columns in both tables