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/PDFTableBandLM.java
implements
			IBlockStackingLayoutManager
{
	protected IPDFTableLayoutManager tbl;
	protected int groupLevel;
	protected int type;
	protected boolean repeatHeader = false;
	public PDFTableBandLM( PDFLayoutEngineContext context,
			PDFStackingLM parent, IContent content, IContentEmitter emitter,
			IReportItemExecutor executor )
	{
		super( context, parent, content, emitter, executor );
		tbl = getTableLayoutManager( );