Add IsoFileSource implementation for local filesystem.

src/image.h

@@ -11,6 +11,14 @@
 
 struct IsoImage {
 	
+	/*
+	 * Image is a context for image manipulation.
+	 * Global objects such as the message_queues must belogn to that
+	 * context. Thus we will have, for example, a msg queue per image,
+	 * so images are completelly independent and can be managed together.
+	 * (Usefull, for example, in Multiple-Document-Interface GUI apps.
+	 * [The stuff we have in init belongs really to image!]
+	 */
 	
 };