Bug 315281 update copyrights for 3.6
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/extensions/NavigatorContentDescriptorManager.java
if (imageRegistry == null) {
			imageRegistry = new ImageRegistry();
		}
		return imageRegistry;
	}
	private class NavigatorContentDescriptorRegistry extends
			NavigatorContentRegistryReader {
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.ui.internal.navigator.extensions.RegistryReader#readRegistry()
		 */
		public void readRegistry() {
			super.readRegistry();
			computeSequenceNumbers();
			computeOverrides();
		}
		protected boolean readElement(final IConfigurationElement anElement) {
			if (TAG_NAVIGATOR_CONTENT.equals(anElement.getName())) {
				SafeRunner.run(new NavigatorSafeRunnable(anElement) {
					public void run() throws Exception {
						addNavigatorContentDescriptor(new NavigatorContentDescriptor(anElement));
					}
				});
			}
			return super.readElement(anElement);
		}
	}
}