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/api/ModuleHandle.java
PropertyHandle propHandle = this.getPropertyHandle( CONFIG_VARS_PROP );
		int posn = findConfigVariablePos( name );
		if ( posn < 0 )
			throw new PropertyValueException( getElement( ), propHandle
					.getPropertyDefn( ), name,
					PropertyValueException.DESIGN_EXCEPTION_ITEM_NOT_FOUND );
		propHandle.removeItem( posn );
	}
	/**
	 * Drops an embedded image handle list from the design. Each one in the list
	 * is the instance of <code>EmbeddedImageHandle</code>.
	 * 
	 * @param images
	 *            the image handle list to remove
	 * @throws SemanticException
	 *             if any image in the list is not found.
	 */
	public void dropImage( List images ) throws SemanticException
	{
		if ( images == null )
			return;
		PropertyHandle propHandle = this.getPropertyHandle( IMAGES_PROP );
		propHandle.removeItems( images );
	}
	/**
	 * Drops an embedded image from the design.
	 * 
	 * @param name
	 *            the image name
	 * @throws SemanticException