[eefscheduler] split getNextEvent of EEFScheduler in two methods: updateIES and getFirstEvent - updateIES: Fills up the Independent Event Set - getFirstEvent: returns the next event according to EEFScheduling Policy
[eefscheduler] made cSequentialScheduler work again with NOBARRIER
[eefscheduler] moved barrierwaiting to scheduler- now the scheduler always returns a non barrier event
[eefscheduler]made simulation working with cSequentialScheduler (barriercreation is noch fully moved to cScheduler)
working on EEFScheduler:added EEFScheduler
[eefscheduler] made EEFScheduler work with NOBARRIER disabled
Initial import of Horizon 4 release.