MI_SORT_INFO and MI_SORT_PARAM massaging

typedef struct st_sort_info

{

  MI_INFO *info;

  MI_CHECK *param;

  enum data_file_type new_data_file_type;

  SORT_KEY_BLOCKS *key_block,*key_block_end;

  uint current_key, total_keys;

  my_off_t filelength,dupp,buff_length;

  ha_rows max_records;

  char *buff;

  uint current_key, total_keys;

  myf myf_rw;

  enum data_file_type new_data_file_type;

  MI_INFO *info;

  MI_CHECK *param;

  char *buff;

  SORT_KEY_BLOCKS *key_block,*key_block_end;

  /* sync things*/

  uint got_error, threads_running;

  pthread_mutex_t mutex;

typedef struct st_mi_sort_param

{

  pthread_t  thr;

  IO_CACHE read_cache;

  IO_CACHE read_cache, tempfile, tempfile_for_exceptions;

  DYNAMIC_ARRAY buffpek;

  ulonglong unique[MI_MAX_KEY_SEG+1];

  my_off_t pos,max_pos,filepos,start_recpos;

  uint key, key_length,real_key_length,sortbuff_size;

  uint maxbuffers, keys, find_length, sort_keys_length;

  uchar **sort_keys;

  byte *rec_buff;

  uint alloced_rec_buff_length;

  void *wordlist, *wordptr;

  my_bool fix_datafile, master;

  MI_KEYDEF *keyinfo;

  SORT_INFO *sort_info;

  IO_CACHE tempfile, tempfile_for_exceptions;

  DYNAMIC_ARRAY buffpek;

  my_off_t pos,max_pos,filepos,start_recpos;

  my_bool fix_datafile, master;

  uchar **sort_keys;

  byte *rec_buff;

  void *wordlist, *wordptr;

  char *record;

  char *tmpdir;

  int (*key_cmp)(struct st_mi_sort_param *, const void *, const void *);