The following mods proposed by

           Mathieu de Naurois <denauroi@lpnhep.in2p3.fr>
New Thread constructor to connect to an existing running thread.
New cases in XAction.

Remove a gSystem->Sleep(10000); !!


git-svn-id: http://root.cern.ch/svn/root/trunk@2341 27541ba8-7e3a-0410-8455-c3a389f83636