Bug 16308 [DND] dnd from os to navigator shows an incorrect icon
smoke test for 0518 it shows a move icon although move will not happen
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/navigator/NavigatorDropAdapter.java
* Returns the actual target of the drop, given the resource
	 * under the mouse.  If the mouse target is a file, then the drop actually 
	 * occurs in its parent.  If the drop location is before or after the
	 * mouse target and feedback is enabled, the target is also the parent.
	 */
	private IContainer getActualTarget(IResource mouseTarget) {
		
		if (getFeedbackEnabled()) {
			if (getCurrentLocation() == LOCATION_BEFORE
				|| getCurrentLocation() == LOCATION_AFTER) {
				return mouseTarget.getParent();
			}
		}
		
		if (mouseTarget.getType() == IResource.FILE) {
			return mouseTarget.getParent();
		}
		
		return (IContainer) mouseTarget;
	}
	
	/**
	 * Returns the display
	 */
	private Display getDisplay() {
		return getViewer().getControl().getDisplay();
	}
	
	/**
	 * Returns the shell