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
* @return the working set filter
 	 */
	WorkingSetFilter getWorkingSetFilter() {
		return fWorkingSetFilter;
	}
	/**
 	 * Returns the Binary filter for this view.
 	 * @return the binary filter
 	 */
	BinaryProjectFilter getBinaryFilter() {
		return fBinaryFilter;
	}
	void restoreFilters() {
		IMemento filtersMem= fMemento.getChild(TAG_FILTERS);
		if(filtersMem != null) {	
			IMemento children[]= filtersMem.getChildren(TAG_FILTER);
			String filters[]= new String[children.length];
			for (int i = 0; i < children.length; i++) {
				filters[i]= children[i].getString(TAG_ELEMENT);
			}
			getPatternFilter().setPatterns(filters);
		} else {
			getPatternFilter().setPatterns(new String[0]);
		}
		
		String show= fMemento.getString(TAG_SHOWLIBRARIES);
		if (show != null)
			getLibraryFilter().setShowLibraries(show.equals("true")); 
		else 
			initLibraryFilterFromPreferences();