Bug 209023 [Markers] New Problems view does not select current problem from editor
I20071106-0816 The Problems view used to select and reveal the problem at a Java editor's caret position. The new Problems view doesn't.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/provisional/views/markers/ExtendedMarkersView.java
* 
		 * @param item
		 * @return boolean <code>true</code> if they are equivalent
		 */
		boolean isEquivalentTo(MarkerItem item) {
			MarkerField[] fields = builder.getGenerator().getVisibleFields();
			if (cachedValues.length != fields.length)
				return false;
			for (int i = 0; i < fields.length; i++) {
				if (cachedValues[i] == fields[i].getValue(item))
					continue;
				return false;
			}
			return true;
		}
	}
	private static int instanceCount = 0;
	private static final String TAG_GENERATOR = "markerContentGenerator"; 
	private static final String TAG_HORIZONTAL_POSITION = "horizontalPosition"; 
	private static final String TAG_VERTICAL_POSITION = "verticalPosition"; 
	private static final String MARKER_FIELD = "MARKER_FIELD"; 
	static {
		Platform.getAdapterManager().registerAdapters(new IAdapterFactory() {
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.core.runtime.IAdapterFactory#getAdapter(java.lang.Object,
			 *      java.lang.Class)
			 */
			public Object getAdapter(Object adaptableObject, Class adapterType) {