Bug 210891 [Automation][Acceptance]Table header is repeated in PDF
Description: Table header is repeated in PDF. Test Date: 20071126 Test Build: BIRT2.3.0 Daily Build: v20071126-0800 Step to reproduce: 1. Use the reportdesign attached 2. Preview it in PDF Expect result: "USA" should not repeat. Actual result: "USA" is repeated.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFBlockStackingLM.java
{
		return maxAvaHeight - currentBP - keepWithCache.getHeight( );
	}
	
	protected void addChild( PDFAbstractLM child )
	{
		this.child = child;
	}
	public PDFBlockStackingLM( PDFLayoutEngineContext context,
			PDFStackingLM parent, IContent content, IReportItemExecutor executor )
	{
		super( context, parent, content, executor );
	}
	protected boolean traverseChildren( )
	{
		boolean hasNextPage = false;
		if ( child != null )
		{
			hasNextPage = child.layout( );
			if ( hasNextPage )
			{
				if ( child.isFinished( ) )
				{
					child = null;
				}
				return true;
			}
		}
		if ( blockExecutor == null )
		{