Bug 145724 Change version after auto convert
By the request of 136536, user get warning message to confirm the auto convert. If user select yes, the file convert to newest format, but the version is still old. If user open this file again, he'll get the warning message even the file converted.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/util/ModelUtil.java
*/
	private static ArrayList cloneStructList( List list )
	{
		if ( list == null )
			return null;
		ArrayList returnList = new ArrayList( );
		for ( int i = 0; i < list.size( ); i++ )
		{
			Object item = list.get( i );
			if ( item instanceof IStructure )
			{
				returnList.add( ( (IStructure) item ).copy( ) );
			}
			else
			{
				assert false;
			}
		}
		return returnList;
	}
	/**
	 * Clones the value.
	 * <ul>
	 * <li>If the value is of simple type, like integer, or string, the
	 * original value will be returned.
	 * <li>If the value is strcuture list, the cloned structure list will be
	 * cloned.
	 * <li>If the value is structure, the cloned structure will be cloned.
	 * <li>If the value is element/strucuture reference value, the
	 * element/structure name will be returned.