Bug 37567 Remove automatic forward linking
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerPart.java
if (elementOfInput == null) 
				return false; 
			return showInput(elementOfInput);
		}
		ISelection selection= context.getSelection();
		if (selection != null) {
			selectReveal(selection);
			return true;
		}
		return false;
	}
	/**
	 * Returns the <code>IShowInSource</code> for this view.
	 */
	protected IShowInSource getShowInSource() {
		return new IShowInSource() {
			public ShowInContext getShowInContext() {
				return new ShowInContext(
					getViewer().getInput(),
					getViewer().getSelection());
			}
		};
	}
	/*
	 * @see org.eclipse.ui.views.navigator.IResourceNavigator#setLinkingEnabled(boolean)
	 * @since 2.1
	 */
	public void setLinkingEnabled(boolean enabled) {
		fLinkingEnabled= enabled;
		PreferenceConstants.getPreferenceStore().setValue(PreferenceConstants.LINK_PACKAGES_TO_EDITOR, enabled);