- Save exception info also in the log file (it was just sent to the client)
  - Fix an old issue with DeactivateWorker("*") (the session is was terminated because
    no worker was active; this call coudl not be used as intermediate step to select a
    small number of workers).


git-svn-id: http://root.cern.ch/svn/root/trunk@36553 27541ba8-7e3a-0410-8455-c3a389f83636