Bug 5571 JAR Packager: Reveal first checked project
If the list of projects in the JAR Packager is long it is possible that the shown projects are not checked even though there are checked projects (due to current selection). ==> reveal the first checked project.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/JarPackageWizardPage.java
path.toString(),
							IResource.ROOT | IResource.PROJECT | IResource.FOLDER | IResource.FILE);
		if (result.isOK() && workspace.getRoot().exists(path))
			return workspace.getRoot().findMember(path);
		return null;
	}
	/**
	 * Creates the checkbox tree and list for selecting resources.
	 *
	 * @param parent the parent control
	 */
	protected void createInputGroup(Composite parent) {
		int labelFlags= JavaElementLabelProvider.SHOW_BASICS
						| JavaElementLabelProvider.SHOW_OVERLAY_ICONS
						| JavaElementLabelProvider.SHOW_SMALL_ICONS;
		ITreeContentProvider treeContentProvider=
			new JavaElementContentProvider() {
				public boolean hasChildren(Object element) {
					
					return !(element instanceof IPackageFragment) && super.hasChildren(element);
				}
			};
		fInputGroup= new CheckboxTreeAndListGroup(
					parent,
					JavaCore.create(JavaPlugin.getDefault().getWorkspace().getRoot()),
					treeContentProvider,
					new JavaElementLabelProvider(labelFlags),
					new BaseJavaElementContentProvider(),
					new JavaElementLabelProvider(labelFlags),
					SWT.NONE,