Bug 147676 [regression]Visibility set in the first col will affect the second col
Description: Visibility set in the first col will affect the second col Steps to reproduce: 1. Insert a grid(3*3), insert contents to each cell. 2.Set the first col to hide all in visibility and preview Expected result: Only the first col is hidden. Actual result: The second col is hidden, too. If you set the second col in step2, the third col will disappear.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFTableLM.java
*/
	protected boolean repeatHeader;
	/**
	 * number of table column
	 */
	protected int columnNumber;
	/**
	 * table width
	 */
	protected int tableWidth;
	protected CellWrapper[] lastRowContent = null;
	protected CellWrapper[] currentRowContent = null;
	protected RowWrapper lastRow = null;
	protected RowWrapper currentRow = null;
	protected RowArea lastRowArea = null;
	protected ArrayList dropContentList = new ArrayList( );
	protected TableLayoutInfo layoutInfo = null;
	protected PDFTableRegionLM regionLM = null;
	/**
	 * current row id
	 */
	protected int currentRowID = 0;
	protected int hiddenRowCount = 0;
	protected ITableBandContent currentBand = null;
	protected int repeatRowCount = 0;
	protected Stack groupStack = new Stack( );
	public PDFTableLM( PDFLayoutEngineContext context, PDFStackingLM parent,
			IContent content, IContentEmitter emitter,
			IReportItemExecutor executor )
	{