Fix Event Listener Notification in case of >1 event notifier

When using eventNotifier with >1 process, Current behavior is to notify only 1 process. This is due to a return statement erroneously placed inside the for loop which iterates over all processes.

The fix is to pull out that return statement and replace a variable to hold the return value. The semantics is to return true iff all process are successfully sent notifications. If 1+ process has issues return is false.