Add mysql builtin $MYSQL_SERVER_VERSION and some function to make

  DBUG_VOID_RETURN;

}

void var_set_string(const char* name, const char* value)

{

  var_set(name, name + strlen(name), value, value + strlen(value));

}

void var_set_int(const char* name, int value)

{

  char buf[21];

  snprintf(buf, sizeof(buf), "%d", value);

  var_set_string(name, buf);

}

/*

  Store an integer (typically the returncode of the last SQL)

  statement in the mysqltest builtin variable $mysql_errno, by

  simulating of a user statement "let $mysql_errno= <integer>"

  statement in the mysqltest builtin variable $mysql_errno

*/

void var_set_errno(int sql_errno)

{

  /* TODO MASV make easier */

  const char *var_name= "$mysql_errno";

  char var_val[21];

  uint length= my_sprintf(var_val, (var_val, "%d", sql_errno));

  var_set(var_name, var_name + 12, var_val, var_val + length);

  return;

  var_set_int("$mysql_errno", sql_errno);

}

/*

  Set variable from the result of a query

                1024, 0, 0, get_var_key, var_free, MYF(0)))

    die("Variable hash initialization failed");

  var_set_string("$MYSQL_SERVER_VERSION", MYSQL_SERVER_VERSION);

  memset(&master_pos, 0, sizeof(master_pos));

  parser.current_line= parser.read_lines= 0;