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/PDFTableLM.java
{
		IRowContent row;
		int rowID;
		public RowWrapper( IRowContent row, int rowID )
		{
			this.row = row;
			this.rowID = rowID;
		}
	}
	protected IReportItemExecutor createExecutor( )
	{
		return executor;
	}
	protected boolean isRootEmpty( )
	{
		return !( root != null && root.getChildrenCount( ) > repeatRowCount );
	}
}