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/content/ListContainerExecutor.java
implements
			IReportItemExecutor
{
	protected boolean repeat = false;
	
	public ListContainerExecutor(IContent content, IReportItemExecutor executor)
	{
		super(content, null);
		this.executor = new ExecutorList(executor, content);
		if(content instanceof IGroupContent)
		{
			repeat = ((IGroupContent)content).isHeaderRepeat( );
		}
		else
		{
			if(content instanceof IListContent)
			{
				repeat =  ((IListContent)content).isHeaderRepeat( );
			}
		}
	}
	
	protected class ExecutorList implements IReportItemExecutor
	{