Bug 136045 the display name does not work
Description: the display name does not work Steps to reproduce: 1. new a datasource and a dataset 2. In the window 'Edit dataset'. click the tab 'Output columns' 3. set a display name on a column Actual result: The display name does not work, however, it is still the column name
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dnd/InsertInLayoutUtil.java
{
			if ( array[i] instanceof ResultSetColumnHandle )
			{
				Object currDataSet = ( (ResultSetColumnHandle) array[i] ).getElementHandle( );
				if ( currDataSet == null )
				{
					return false;
				}
				if ( dataSet == null )
				{
					dataSet = currDataSet;
				}
				else
				{
					if ( dataSet != currDataSet )
					{
						return false;
					}
				}
			}
		}
		return true;
	}
	/**
	 * Validates container of drop target from data set in data view
	 * 
	 * @param dropPart
	 * @return validate result
	 */
	protected static boolean handleValidateDataSetDropContainer(