Bug 178519 Problems in multi-rows header
Please see the attachments.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFTableLM.java
implements
			IBlockStackingLayoutManager
{
	/**
	 * table content
	 */
	private ITableContent tableContent;
	/**
	 * identify if repeat header
	 */
	protected boolean repeatHeader;
	/**
	 * number of table column
	 */
	protected int columnNumber;
	/**
	 * table width
	 */
	protected int tableWidth;