Bug 147676 [regression]Visibility set in the first col will affect the second col
Description: Visibility set in the first col will affect the second col Steps to reproduce: 1. Insert a grid(3*3), insert contents to each cell. 2.Set the first col to hide all in visibility and preview Expected result: Only the first col is hidden. Actual result: The second col is hidden, too. If you set the second col in step2, the third col will disappear.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFAbstractLM.java
closeExecutor( );
				status = STATUS_END;
				
				
				if ( isPageBreakAfter( ) )
				{
					return true;
				}
			case STATUS_END :
				processEndStatus( );
				return false;
		}
		return hasNextPage;
	}
	protected void closeExecutor( )
	{
		if ( executor != null )
		{
			executor.close( );
		}
	}
	protected void processEndStatus( )
	{
		start( );
		end( );
	}
	protected abstract boolean layoutChildren( );
	public boolean isFinished( )
	{