Bug 172814 [Viewers] Rename AbstractViewerEditor to ColumnViewerEditor
There is no "AbstractViewer", and this class is referenced from ColumnViewer. To make the names more consistent, it should be called ColumnViewerEditor, not AbstractViewerEditor.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/ColumnViewer.java
* <p>
	 * If the label provider is an <code>ILabelProvider</code>, then it
	 * provides only the label text and image for the first column, and any
	 * remaining columns are blank. Implementers of <code>ILabelProvider</code>
	 * may also implement {@link IColorProvider} and/or {@link IFontProvider} to
	 * provide colors and/or fonts.
	 * </p>
	 * 
	 */
	public void setLabelProvider(IBaseLabelProvider labelProvider) {
		Assert.isTrue(labelProvider instanceof ITableLabelProvider
				|| labelProvider instanceof ILabelProvider
				|| labelProvider instanceof CellLabelProvider);
		updateColumnParts(labelProvider);
		
		super.setLabelProvider(labelProvider);
	}
	/**
	 * Clear the viewer parts for the columns
	 */
	private void updateColumnParts(IBaseLabelProvider labelProvider) {
		ViewerColumn column;
		int i = 0;
		while ((column = getViewerColumn(i++)) != null) {
			column.setLabelProvider(CellLabelProvider
					.createViewerLabelProvider(labelProvider), false);
		}
	}
	/**
	 * Cancels a currently active cell editor if one is active. All changes