New options -charset, -in_charset, -out_charset

xorriso/xorriso_private.h

@@ -158,6 +158,7 @@ struct XorrisO { /* the global context of xorriso */
  char indev[SfileadrL];
  void *in_drive_handle;  /* interpreted only by xorrisoburn.c */
  void *in_volset_handle; /* interpreted only by xorrisoburn.c */
+ char *in_charset;       /* The charset to interpret the filename bytes */
 
  int volset_change_pending; /* whether -commit would make sense */
  int no_volset_present;     /* set to 1 on first failure */
@@ -168,6 +169,7 @@ struct XorrisO { /* the global context of xorriso */
 
  char outdev[SfileadrL];
  void *out_drive_handle; /* interpreted only by xorrisoburn.c */
+ char *out_charset;      /* The charset to produce the filename bytes for */
  int dev_fd_1; /* The fd which substitutes for /dev/fd/1 and is
                      connected to externaly perveived stdout.
                   */