Bug 206603 Table column is not rendered in pdf if its width is set in ems
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;
	
	/**
	 * the first visible column id of the table.
	 */
	protected int startCol = -1;
	
	/**
	 * the last visible column id of the table.