Merges changes from master branch to resolve issue with CPU and memory

and constraints on scheduled thread pool saturation.  Adds a new
scheduled thread pool for each processing chain that the components in
the chain can share, versus the single shared pool exposed by the
threadpoolmanager class.

src/controller/ThreadPoolManager.java

@@ -41,6 +41,11 @@ public class ThreadPoolManager
 	public ThreadPoolManager()
 	{
 	}
+	
+	public ScheduledExecutorService getScheduledExecutorService()
+	{
+		return mExecutor;
+	}
 
 	public ScheduledFuture<?> scheduleFixedRate( ThreadType type, 
 										Runnable command,