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
* 3. end, the last time it is called. In this status, it means all the
	 * content has been layout, it is the time to handle the page-break-after.
	 */
	public boolean layout( )
	{
		switch ( status )
		{
			case STATUS_INTIALIZE:
				
				
				
				if ( handleVisibility( ) )
				{
					status = STATUS_END;
					return false;
				}
				
				
				if ( isPageBreakBefore( ) )
				{
					status = STATUS_START;
					context.endContentWithPageBreak( null );
					return true;
				}				
			case STATUS_START :
				
				context.startContent(content);
			case STATUS_INPROGRESS :
				if (status == STATUS_INPROGRESS)
				{