Bug 87826 Need to improve image loading in Workbench
The Workbench image loading has several issues 1) The string "icons/full" is all over the place in the UI and should be made a constant 2) This needs to be prepended by /nl 3) The plugin descriptor is still in use to load images. This does not support nl which is required for BIDI support
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/tasklist/MarkerUtil.java
if (isMarkerType(marker, IMarker.PROBLEM)) {
            switch (getSeverity(marker)) {
            case IMarker.SEVERITY_ERROR:
                return getImage("error");
            case IMarker.SEVERITY_WARNING:
                return getImage("warn");
            case IMarker.SEVERITY_INFO:
                return getImage("info");
            }
        } else if (isMarkerType(marker, IMarker.TASK)) {
            return getImage("task");
        }
        return null;
    }
    /**
     * Returns the image descriptor with the given key, or <code>null</code> if not found.
     */
    static ImageDescriptor getImageDescriptor(String key) {
        ImageDescriptor desc = (ImageDescriptor) imageDescriptors.get(key);
        if (desc == null) {
            System.err.println("TaskList: No image descriptor for " + key); 
        }
        return desc;
    }
    /**
     * Returns the text for the line and location column given the marker.
     */
    public static String getLineAndLocation(IMarker marker) {
        int lineNumber = getLineNumber(marker);
        String location = getLocation(marker);