New API call isoburn_igopt_set_tail_blocks()

libisoburn/isoburn.h

@@ -549,6 +549,10 @@ struct isoburn_imgen_opts {
     */
     void *libjte_handle;
 
+    /* A trailing padding of zero bytes which belongs to the image
+    */
+    uint32_t tail_blocks;
+
 };