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/CheckboxTreeAndListGroup.java
}
	/**
	 * Selects or deselect all of the elements in the tree depending on the value of the selection
	 * boolean. Be sure to update the displayed files as well.
	 */
	public void setAllSelections(final boolean selection) {
		
		BusyIndicator.showWhile(fTreeViewer.getControl().getDisplay(), new Runnable() {
			public void run() {
				setTreeChecked(fRoot, selection);
				fListViewer.setAllChecked(selection);
			}
		});
	}
	/**
	 *	Sets the list viewer's providers to those passed
	 *
	 *	@param contentProvider ITreeContentProvider
	 *	@param labelProvider ILabelProvider
	 */
	public void setListProviders(
		IStructuredContentProvider contentProvider,
		ILabelProvider labelProvider) {
		fListViewer.setContentProvider(contentProvider);
		fListViewer.setLabelProvider(labelProvider);
	}
	/**
	 *	Sets the sorter that is to be applied to self's list viewer
	 */
	public void setListSorter(ViewerSorter sorter) {