Bug 164796 [Viewers] TableViewer setSelectionToWidget always scrolls to widget
The current implementation uses setSelection(TableItem[]) which always scrolls to the selection so the reveal-flags has no effect.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTableViewer.java
*/
	public void setItemCount(int count) {
		int oldCount = doGetItemCount();
		if (count < oldCount) {
			
			for (int i = count; i < oldCount; i++) {
				Item item = doGetItem(i);
				if (item.getData() != null) {
					disassociate(item);
				}
			}
		}
		doSetItemCount(count);
		if (virtualManager != null) {
			virtualManager.adjustCacheSize(count);
		}
		getControl().redraw();
	}
	/**
	 * Replace the entries starting at index with elements. This method assumes
	 * all of these values are correct and will not call the content provider to
	 * verify. <strong>Note that this method will create a TableItem for all of
	 * the elements provided</strong>.
	 * 
	 * @param element
	 * @param index
	 * @see ILazyContentProvider
	 * 
	 * @since 3.1
	 */