changed bytes_received, bytes_sent status variables to longlong


sql/mysqld.cc:
  changed bytes_received, bytes_sent status variables to longlong
sql/sql_class.h:
  changed bytes_received, bytes_sent status variables to longlong
sql/sql_show.cc:
  changed bytes_received, bytes_sent status variables to longlong
sql/structs.h:
  changed bytes_received, bytes_sent status variables to longlong