Bug 161401 [Viewers] Tweak ColumnViewer-API
- Rename getRowPart(Point point) => getViewerRow() - Rename getCell(Point point) => getViewerCell() - Rename setViewerColumn(final int columnIndex, ViewerColumn viewer) => setupEditingSupport - Make setupEditingSupport() private no one from external needs to use this API to set the EditingSupport for an ViewerColumn
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableViewer.java
* </p>
	 * 
	 * @param element
	 *            the element
	 * @param position
	 *            a 0-based position relative to the model, or -1 to indicate
	 *            the last position
	 */
	public void insert(Object element, int position) {
		tableViewerImpl.applyEditorValue();
		if (getComparator() != null || hasFilters()) {
			add(element);
			return;
		}
		if (position == -1) {
			position = table.getItemCount();
		}
		createItem(element, position);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.viewers.StructuredViewer#internalRefresh(java.lang.Object)
	 */
	protected void internalRefresh(Object element) {
		internalRefresh(element, true);
	}
	/*
	 * (non-Javadoc)
	 *