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
for ( int i = dropCell.cell.getColumnID( ); i < dropCell.cell
					.getColumnID( )
					+ dropCell.cell.getColSpan( ); i++ )
			{
				hasCell[i] = true;
			}
		}
		
		if ( height > 0 )
		{
			
			for ( int i = 0; i < dropCells.size( ); i++ )
			{
				DropCellInfo dropCell = (DropCellInfo) dropCells.get( i );
				dropCell.leftHeight -= height;
				
				if ( dropCell.leftHeight <= 0 )
				{
					dropCell.cell.setHeight( dropCell.cell.getHeight( )
							- dropCell.leftHeight );
					dropCell.leftHeight = 0;
				}
			}
			
			for ( int i = 0; i < columnNumber; i++ )
			{
				if ( !hasCell[i] )
				{
					
					ICellContent cellContent = null;