New option -iso_rr_pattern, influencing several options with multiple args

test/xorriso_private.h

@@ -113,6 +113,7 @@ struct XorrisO { /* the global context of xorriso */
     3= (eventually structured) shell parser expression
     4= shell parser expression for leaf name
  */
+
  int structured_search;
  /* 0= flat text search
     1= '/' is a significant separator that cannot be matched by wildcards
@@ -121,6 +122,8 @@ struct XorrisO { /* the global context of xorriso */
     4= actually not structured but unique find mode (with search_mode 4)
  */
 
+ int do_iso_rr_pattern; /* 0=off, 1=on, 2=ls */
+
  int temp_mem_limit;
 
  int use_stdin; /* use raw stdin even if readline support is compiled */