sql/log.cc:
  Member no_rotate of MYSQL_LOG is useless; this shows it for sure:
  [guilhem@gbichot2 mysql-4.0]$ bk -r grep no_rotate
  sql/log.cc      1.83       no_rotate(0), need_start_event(1)
  sql/log.cc      1.75      if (no_rotate)
  sql/log.cc      1.89      if (!no_rotate)
  sql/sql_class.h 1.119     bool no_rotate;
  i.e. no_rotate is 0 all the time. So we don't need it.
  Biggest part of the patch is indentation change.
sql/sql_class.h:
  suppress no_rotate