Bug 209910 Drag the dataset from library, the resultset column number is doubled
Reproduce step: 1. Create one data set in library. 2. Drag it into a report design. 3. Open the data set editor, switch to the output column page, the result set number is doubled. I found there is something wrong in the org.eclipse.birt.report.model.api.util.CompatibilityUtil class. The method addStructures()will add structures list twice when the propHandle is not local.
data/org.eclipse.birt.report.data.adapter/src/org/eclipse/birt/report/data/adapter/impl/MetaDataPopulator.java
String newColumnName;
		if ( columnName == null
				|| columnName.trim( ).length( ) == 0
				|| newColumnNameSet.contains( columnName ) )
		{
			
			if ( columnName == null || columnName.trim( ).length( ) == 0 )
				newColumnName = UNNAME_PREFIX
						+ RENAME_SEPARATOR + String.valueOf( index + 1 );
			else
				newColumnName = columnName
						+ RENAME_SEPARATOR + String.valueOf( index + 1 );
			int i = 1;
			while ( orgColumnNameSet.contains( newColumnName )
					|| newColumnNameSet.contains( newColumnName ) )
			{
				newColumnName += String.valueOf( RENAME_SEPARATOR ) + i;
				i++;
			}
		}
		else
		{
			newColumnName = columnName;
		}
		return newColumnName;
	}
	
	
	/**
	 * whether need to use result hint