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/PDFStackingLM.java
protected boolean isRootEmpty( )
	{
		return !( root != null && root.getChildrenCount( ) > 0 );
	}
	protected abstract boolean traverseChildren( );
	
	/**
	 * submit the current layout result 
	 * @return
	 */
	protected boolean submitRoot( )
	{
		if(root==null)
		{
			return true;
		}
		boolean success = true;
		if ( parent != null )
		{
			
			success = parent.addArea( root, false, isKeepWithNext() );
			
			if ( success )
			{
				isFirst = false;
				root = null;
			}
		}
		else