Added Copyright headers, added/cleaned up comments.
i. Changed AddImageTask.CurrentDirFether to be a Runnable instead of Swingworker.
ii. Changed the DSPProgressMonitorImpl to update the progress UI on the Swing EDT thread.
iii. Added the image related params to AddImageTask constructor, and dropped the SetImageOptions() method.
Changed AddImageTask to be a plain Runnable instead of a SwingWorker.