Renamed action-procs.tcl to sim-action-procs.tcl and role-procs.tcl to sim-role-procs.tcl to avoid confusion with the corresponding files in workflow/tcl/
fixing bug 1172. Making sure acs_privacy::set_user_read_private_data is not invoked if the user has already been added to dotlrn. It seems set_user_read_private_data is always invoked in tandem with dotlrn::user_add so maybe it should be invoked from that proc and controlled by a switch.
