Bug 176467 Wrong page break effect for spanned cell
When page break occurs on spanned cell, this cell on next page is lost, which cause incorrect page layout. Report design to reproduce the error is attached.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/html/HTMLAbstractLM.java
{
		if ( parent != null && !parent.isOutput )
		{
			parent.startContent( );
		}
		if ( emitter != null )
		{
			ContentEmitterUtil.startContent( content, emitter );
		}
		isOutput = true;
	}
	/**
	 * end output the content
	 */
	protected void end( )
	{
		if ( emitter != null )
		{
			ContentEmitterUtil.endContent( content, emitter );
		}
	}
	/**
	 * layout the content and its children.
	 * 
	 * It can be called in three status: 1. start, the first time it is called,
	 * in this status, it first check if it need page-break-before,
	 * 
	 * 2. inprogress, the second or more time it is called. In this status, it
	 * tries to layout the content and its children to the current page.
	 *