event: added a hackish ability to set an event as "locked" to its current state, cleaned up some comments
thread: updated Reschedule to sit at a synchronization barrier when no other threads are ready for execution
svc: updated waitSychronization to not overwrite handle on return, added stub for SleepThread (does nothing)
gsp: always pass through synchronization barrier for commands
svc: added missing function wrapper for SleepThread