Bug 168170 The pagination of pdf is not right.
When the lastly row of pagination contain the multi-line chinese char, The second page's page-header will show the chinese char that are the previous page's lastly row. I hope you can know. please see attached design/screenshot
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFTableLM.java
Iterator it = dropList.iterator( );
 		while ( it.hasNext( ) )
		{
			DropCellInfo dropCell = (DropCellInfo) it.next( );
			for (int columnID = dropCell.cell.getColumnID(); columnID < dropCell.cell
					.getColumnID()
					+ dropCell.cell.getColSpan(); columnID++)
				lastDropCells.add(new Integer(columnID));
		}
 		
		
		ArrayList list = this.dropList;
		int bottomMaxBorder = 0;
		ArrayList changed = new ArrayList( );
		for ( int i = 0; i < list.size( ); i++ )
		{
			DropCellInfo cell = (DropCellInfo) list.get( i );
			bottomMaxBorder = Math.max( bbr.resolveBottomBorder( cell.cell ),
					bottomMaxBorder );
			changed.add( cell.cell );
		}
		
		updateAllUnresolvedCellArea(lastDropCells);
		if ( lastRowArea != null )
		{
			Iterator iter = lastRowArea.getChildren( );
			while ( iter.hasNext( ) )
			{
				CellArea cell = (CellArea) iter.next( );
				if ( !changed.contains( cell ) )