Fix dirty coords for our overlay so it all lines up and works. Yay!

And some tabs -> spaces while I was there.


git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@123 ed5b42cb-e716-0410-a449-f6a68f950b19

src/java/com/threerings/media/MediaOverlay.java

@@ -135,7 +135,8 @@ public class MediaOverlay
             _dirty = _metamgr.getRegionManager().getDirtyRegions();
             for (int ii = 0; ii < _dirty.length; ii++) {
                 Rectangle dirty = _dirty[ii];
-                repmgr.addDirtyRegion(root, dirty.x, dirty.y, dirty.width, dirty.height);
+                repmgr.addDirtyRegion(root, dirty.x - root.getX(), dirty.y - root.getY(), 
+                    dirty.width, dirty.height);
             }
         }
     }