Bug 5699 Add ResourceTransfer to packages view
The packages view should add the ResoruceTransfer as a drag source to its list of transfers
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerPart.java
if (o instanceof IJavaElement)
					elementMem.putString(TAG_PATH, ((IJavaElement) expandedElements[i]).getHandleIdentifier());
			}
		}
	}
	protected void saveWorkingSetState(IMemento memento) {
		IWorkingSet ws= getWorkingSetFilter().getWorkingSet();
		if (ws != null) {
			memento.putString(TAG_WORKINGSET, ws.getName());
		}
	}
	void restoreState(IMemento memento) {
		restoreExpansionState(memento);
		restoreSelectionState(memento);
		restoreScrollState(memento, fViewer.getTree());
	}
	protected void restoreScrollState(IMemento memento, Tree tree) {
		ScrollBar bar= tree.getVerticalBar();
		if (bar != null) {
			try {
				String posStr= memento.getString(TAG_VERTICAL_POSITION);
				int position;
				position= new Integer(posStr).intValue();
				bar.setSelection(position);
			} catch (NumberFormatException e) {
				
			}
		}
		bar= tree.getHorizontalBar();
		if (bar != null) {