Bug 213907 Provide a copy constructor for SubqueryDefinition.
Engine need a copy constructor to generate a SubqueryDefinition from an ISubqueryDefinition and change the name of the query.
data/org.eclipse.birt.report.data.adapter/src/org/eclipse/birt/report/data/adapter/impl/DataRequestSessionImpl.java
{
		ILevel[] levels = dimension.getHierarchy( ).getLevels( );
		for ( int j = 0; j < levels.length; j++ )
		{
			if ( targetName.equals( OlapExpressionUtil.getQualifiedLevelName( dimension.getName( ),
					levels[j].getName( ) ) ) )
			{
				return levels[j].getName( );
			}
		}
		return targetName;
	}
	
	/**
	 * Populate all dimensions.
	 * @param cubeMaterializer
	 * @param dimHandles
	 * @param stopSign
	 * @return
	 * @throws IOException
	 * @throws BirtException
	 * @throws DataException
	 */
	private IDimension[] populateDimensions( CubeMaterializer cubeMaterializer,
			TabularCubeHandle cubeHandle, Map appContext, StopSign stopSign ) throws IOException, BirtException, DataException
	{
		List dimHandles = cubeHandle.getContents( CubeHandle.DIMENSIONS_PROP );
		List result = new ArrayList( );
		for ( int i = 0; i < dimHandles.size( ); i++ )
		{