New API calls isoburn_igopt_set_partition_img, isoburn_igopt_get_partition_img

libisoburn/isoburn.h

@@ -553,6 +553,12 @@ struct isoburn_imgen_opts {
     */
     uint32_t tail_blocks;
 
+    /* Eventual disk file paths of prepared images which shall be appended
+       after the ISO image and described by partiton table entries in a MBR.
+    */
+    char *appended_partitions[4];
+    uint8_t appended_part_types[4];
+
 };