Condition check before ending the main thread.

Make sure the main thread waits for the child thread with the Run() method.

* Add this at the end of your Run() method for each device:
```
boost::lock_guard<boost::mutex> lock(fRunningMutex);
fRunningFinished = true;
fRunningCondition.notify_one();
```
* Then you must replace the `char ch; cin.get(ch);` in your main() function with:
```
boost::unique_lock<boost::mutex> lock(processor.fRunningMutex);
while (!processor.fRunningFinished)
{
    processor.fRunningCondition.wait(lock);
}
```

fairmq/run/runSplitter.cxx

@@ -124,8 +124,12 @@ int main(int argc, char** argv)
     splitter.ChangeState(FairMQSplitter::SETINPUT);
     splitter.ChangeState(FairMQSplitter::RUN);
 
-    char ch;
-    cin.get(ch);
+    // wait until the running thread has finished processing.
+    boost::unique_lock<boost::mutex> lock(splitter.fRunningMutex);
+    while (!splitter.fRunningFinished)
+    {
+        splitter.fRunningCondition.wait(lock);
+    }
 
     splitter.ChangeState(FairMQSplitter::STOP);
     splitter.ChangeState(FairMQSplitter::END);