Make sure that we only remove from one process, this way we can
check if the list is empty without having a lock. The list is sorted
so even if we get interrupted between the [condition] whileFalse: [res]
and someone adds an older timer, it is okay to use this timer.
When dispatching everything in the same context we avoid all kind
of issues with locking. If we use a truely multi threaded VM we could
probably use multiple dispatchers.
Holger Hans Peter Freyther