LP#1269911: composite attributes: configurable "icons" attribute Honor the configurable icon attribute within the TPAC. Create a default set of icons, by copying from the existing icons, which roughly map to the new "icon_format" record attribute definition mappings. Signed-off-by: Bill Erickson <berick@esilibrary.com> Signed-off-by: Mike Rylander <mrylander@gmail.com> Signed-off-by: Dan Wells <dbw2@calvin.edu>