Bug 145021 Enhance the agrregate on option in column binding dialog
1. Check if the expression is aggregate expression by data utility class. 2. If yes, the option is ?all? and group name list 3. if not, the option disabled (or set to none?) if the column binding is in detail row. If the column binding is in group row, the option is ?None? and group name list.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/DataUtil.java
return getQueryDefinition( dataSetDesign, rowsToReturn );
		}
		if ( dataSetDesign != null )
		{
			QueryDefinition defn = new QueryDefinition( null );
			defn.setDataSetName( dataSetDesign.getName( ) );
			if ( rowsToReturn > 0 )
			{
				defn.setMaxRows( rowsToReturn );
			}
			for ( int i = 0; i < bindingParams.length; i++ )
			{
				ParamBindingHandle param = bindingParams[i];
				InputParameterBinding binding = new InputParameterBinding( param.getParamName( ),
						new ScriptExpression( param.getExpression( ) ) );
				defn.addInputParamBinding( binding );
			}
			return defn;
		}
		return null;
	}
	/**
	 * 
	 * @param dataSetDesign
	 * @param rowsToReturn
	 * @return
	 */
	public static final QueryDefinition getQueryDefinition(
			IBaseDataSetDesign dataSetDesign, int rowsToReturn )
	{